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Results 601 to 630 of 1934:

Genetic diversity and maternal origin of Vietnamese indigenous chicken breeds inferred from complete sequences of mitochondrial DNA D-loop regionOriginal Paper

Thi Thanh Nhan Giang, Van Ba Nguyen, Thi Quynh Chau Nguyen, Khanh Van Nguyen, Lan Doan Pham

Czech J. Anim. Sci., 2023, 68(10):423-432 | DOI: 10.17221/226/2022-CJAS

Indigenous chickens play a significant role in food security, income growth and socio-cultural life of rural households in Vietnam. This study was conducted to assess the genetic diversity as well as the phylogenetic relationships of Vietnamese indigenous chickens (Gallus gallus) to support the conservation of their genetic resources for sustainable rural farming.  In this study, the genetic diversity and the phylogenetic relationships of 10 Vietnamese indigenous chicken breeds were analyzed using complete sequences of mitochondrial DNA (mtDNA) displacement-loop (D-loop) region. The average nucleotide and haplotype diversities of Vietnamese chickens were 0.006 3 ± 0.000 22 and 0.918 ± 0.010, respectively. A total of 39 polymorphic sites and 29 haplotypes were identified. The maximum likelihood tree classified these haplotypes into seven haplogroups (A, B, C, D, E, G and V), with haplogroups A and B being the two predominant maternal lineages of Vietnamese indigenous chickens, while haplogroups C, D, E, G and V were found in the remaining chickens. Several haplotypes from different haplogroups were shared among some chicken breeds. These results suggested that Vietnamese indigenous chicken breeds have multiple maternal origins, mainly from Chinese, Southeast Asian and Indian chickens, and that these breeds share common maternal lineages. The high level of genetic diversity in Vietnamese chickens demonstrates significance of conservation for future use.

Determination of some heavy metals in different wheat flour brands in Sulaimani, Kurdistan Region – IraqOriginal Paper

Muhammad Faruq Wahab, Dara Muhamed Jamil

Czech J. Food Sci., 2023, 41(6):455-461 | DOI: 10.17221/85/2023-CJFS

Wheat flour is one of the most important sources of nutrients, and it is widely consumed worldwide as a raw ingredient in bread and other pastries. High heavy metal concentrations in the consumed wheat products could induce higher health risks. This study evaluated the heavy metal concentrations in the most available foreign and domestic wheat flour in Sulaimani, Kurdistan Iraq. The wheat flour samples were collected from different locations, and the heavy metal concentration was measured by inductively coupled plasma optical emission spectrometry (ICP-OES). The mean values in wheat flour samples were roughly within the permissible limit set by Iraqi standard (IQS), GCC Standardization Organization (GSO) (GCC – Gulf Cooperation Council), Codex, and FAO/WHO. Heavy metals were detected in the descending order copper (Cu) > lead (Pb) > arsenic (As) > chromium (Cr) > nickel (Ni) > cadmium (Cd) > cobalt (Co). The results showed that wheat flour samples from the Sulaimani markets were slightly contaminated with Ni, and one domestic wheat flour sample with Pb was probably linked to fertiliser and soil contamination. It is concluded that wheat flour could be a source of chronic exposure to toxic heavy metals such as nickel and lead, resulting in adverse health issues later. Consequently, regular monitoring of soil contamination, water quality, and use of recommended levels of fertilisers and pesticides in the agricultural areas of Sulaimani are recommended.

Nanopesticides: Current status and scope for their application in agricultureReview

Jayant Yadav, Poonam Jasrotia, Prem Lal Kashyap, Ajay Kumar Bhardwaj, Sudheer Kumar, Maha Singh, Gyanendra Pratap Singh

Plant Protect. Sci., 2022, 58(1):1-17 | DOI: 10.17221/102/2020-PPS

Nanotechnology is a rapidly evolving field that has the potential to revolutionise food systems and counter the present-day challenge of food security. It envisages taking agriculture from the era of indiscriminate natural resource use and environmental degradation to the brave new world of advanced systems with enhanced material use efficiency and targeted applications to reduce crop losses caused due to abiotic-biotic stresses as well as to give due considerations to the environment. To manage plant diseases and insect pests, pesticides are inevitably used in agriculture. However, the higher dosage of these chemicals on a per hectare basis has resulted in many environmental and health hazards. To tackle the conventional pesticide related issues, a new field of science called nanotechnology has led to the development of nanopesticides that have less active ingredients, but better efficiency. The nanopesticides contain the carrier molecule or the active nanosized ingredient with a very high surface area to the volume property that provides them unique exploitable-advantages. Several formulations, viz., nanoemulsions, nanosuspensions, nanogels, metal compound-based nanopesticides, have been developed for different modes of action and vivid applications. The biggest advantage comes due to the small size of the particles that help in properly spreading the ingredients on the pest surface and, thus, producing a better action than conventional pesticides. The use of nanoparticles in the form of nanopesticides, nanofertilisers, and nano delivery systems is on the increase day by day due to their higher efficiency and reduced dosage requirements. However, human beings and other organisms are also getting exposed to the nano-entities during the application or afterwards. The interactions of these engineered nano-entities with biological systems are relatively unknown thus far. Therefore, before their wider usage in crop production and protection, a better understanding of their interactions, and adverse effects, if any, is also crucial for a sustainable transition.

Past, present and future of the applications of machine learning in soil science and hydrologyReview

Xiangwei Wang, Yizhe Yang, Jianglong Lv, Hailong He

Soil & Water Res., 2023, 18(2):67-80 | DOI: 10.17221/94/2022-SWR

Machine learning can handle an ever-increasing amount of data with the ability to learn models from the data. It has been widely used in a variety of disciplines and is gaining increasingly more attention nowadays. As it is challenging to map soil and hydrological information that are characterised with high spatial and temporal variability, applications of machine learning in soil science and hydrology (AMLSH) have become popularised. To better understand the current state of AMLSH research, a scientific and quantitative approach was performed to statistically analyse publication information from 1973 to 2021 archived in the Scopus database using scientometric analysis tools, including VOSviewer, CiteSpace, and the open-source R package “bibliometrix”. The results show a significant increase in the number of publications on AMLSH since 2006. The major contributions were identified based on country origins (China, the USA, and India), institutions (Hohai University, Islamic Azad University, and Wuhan University), and journals (Journal of Hydrology, Remote Sensing, and Geoderma). The keywords analysis of the AMLSH research demonstrates four research hotspots: neural network, artificial intelligence, machine learning, and soil. The most frequently utilised machine learning (ML) methods are neural networks, decision trees, random forests and other methods for image processing and predictive analysis. McBratney et al. 2003 is the most highly cited article. Our research sheds light on the research process on AMLSH and concludes with future research perspectives.

Detection and molecular identification of a 16SrI group phytoplasma associated with sisal purple leafroll diseaseOriginal Paper

Guihua Wang, Weihuai Wu, Jingen Xi, Helong Chen, Chunping He, Ye Li, Jinlong Zheng, John S. Hu, Kexian Yi

Plant Protect. Sci., 2023, 59(1):19-30 | DOI: 10.17221/90/2022-PPS

Sisal purple leafroll disease (SPLD) is a destructive disease affecting sisal in China, however, its etiology remains unknown. This disease is characterized by purple margins and rolling and yellowing of the leaves. Recently, phytoplasma was found to be present in SPLD-affected sisal according to PCR assay. To further verify the presence of phytoplasma, determine its association with SPLD and identify the possible pathogenic phytoplasma infecting sisal, 80 symptomatic and 65 asymptomatic sisal samples were collected from the main sisal farms in three Chinese provinces, including Hainan, Guangdong and Guangxi provinces, from 2018 to 2021. PCR assays and transmission electron microscopy further revealed the presence of phytoplasma. Nested PCR using the universal primer R16mF2/R16mR1 followed by R16F2n/R16R2 was confirmed as the most effective molecular method for the detection of phytoplasma in sisal. A comparison of the detection rate of phytoplasma in symptomatic (83%) versus asymptomatic (17%) sisal populations showed some association between phytoplasma and SPLD. Sequencing analyses, phylogenetic analyses, and virtual restriction fragment length polymorphism analyses confirmed the presence of phytoplasma in sisal belonging to 16SrI-B. This is the first report of 16SrI-B phytoplasma infecting sisal in China.

Assessment of heavy metals in soil, oilseed rape (Brassica napus L.) and honeyOriginal Paper

Atanas Atanasov, Ivaylo Hristakov, Gergana Kuncheva, Milan Koszel, Veselin Dochev

Plant Soil Environ., 2023, 69(8):400-407 | DOI: 10.17221/265/2023-PSE

The aim of this study was to determine the heavy metals concentrations in soil, inflorescences of Brassica napus and rapeseed honey sampled from some regions of north-eastern Bulgaria. Thirteen locations were selected for experimental studies. The soils, plants and honeys samples were taken from conventional beekeeping areas away from major industrial pollutants. The median amounts of elements in the soil samples (mg/kg DW) are 1.1246 for Fe(s), 0.7048 for Al(s), 0.5636 for Pb(s), 0.1658 for Cu(s) and 0.0148 for Zn(s). The median amounts of heavy metals measured in the inflorescences of Brassica napus (mg/ kg DW) are 5.5430 for Fe(p), 2.9095 for Zn(p), 1.3225 for Pb(p), 0.2593 for Cu(p) and 0.2105 for Al(p). The median heavy metals concentrations in  tested honey (mg/kg DW) are 1.0026 for Fe(h), 0.1849 for Al(h), 0.1832 for Pb(h), 0.1250 for Zn(h), 0.0702 for. Cu(h). The relationship between the heavy metal in soil, plants and honey was investigated using the Spearman’s rank correlation coefficient. Significant differences in the concentrations of Fe(s), Al(s) and Pb(s) in soils, Fe(p) and Zn(p) in the plant samples, Fe(h) in honey samples from the different locations were found. The heavy metal content tested in honey did not pose a risk to human health.

Sex identification in Australian skinks (Egernia stokesii, E. hosmeri, E. striolata) using cloacoscopyOriginal Paper

Z Knotek, M Oliveri, E Cermakova, P Sramek

Vet Med - Czech, 2023, 68(6):253-257 | DOI: 10.17221/3/2023-VETMED

Thirteen adult healthy captive skinks, six Gidgee spiny-tailed skinks (Egernia stokesii), three Hosmer’s spiny-tailed skinks (Egernia hosmeri) and four tree crevice-skinks (Egernia striolata), were submitted to the study. The weight of the animals ranged from 28 g to 146 g. All skinks were explored during their putative mating season, which is December. Lizards were restrained manually and positioned in ventral recumbenceCloacoscopy was performed with the rigid endoscope, protecting channel, endocamera and recording system Telepack-Pal (Karl Storz Endoskope, Tuttlingen, Germany). While the endoscope was gently introduced into the cloaca and advanced into the coprodeum sterile saline was flushed into the cloaca through the protecting channel. The endoscope was then slowly withdrawn to allow visualization of the main structures of the urodeum and proctodeum. Male skinks are characterized by the presence of urethral papillae and only one horizontal septum which divides the chamber of the urodeum into two subchambers. Female skinks are characterised by the presence of two septa. The central-dorsal fold that divides the urodeum into two pouches in female skinks is absent in males. Cloacoscopy proved an effective method of sex identification and can be considered a valuable method for breeding and conservation in monomorphic skink lizards.

Potential of mixed Picea abies (L.) Karst. and Pinus sylvestris L. forests in lowland areas of Central BohemiaOriginal Paper

Pavel Brabec, Jakub Brichta, Zdenìk Vacek, Stanislav Vacek, Václav ©imùnek, Vojtìch Hájek

J. For. Sci., 2023, 69(11):470-484 | DOI: 10.17221/76/2023-JFS

Mixed forests play a key role in terms of stability, production potential, and adaptation to climate change. In addition, the studied Norway spruce [Picea abies (L.) Karst.] and Scots pine (Pinus sylvestris L.) belong to the most economically important tree species in Europe. The objectives were to determine the effect of the species composition of these two tree genera on the production, structure, diversity, and growth of mixed stands at lower elevations in the Czech Republic. Based on dendroecological samples, research was also carried out on the influence of climatic factors and climate change on the radial growth of these trees of interest. Mixed forests showed higher timber production by 29.8% compared to spruce and pine monocultures. The production of mature stands ranged from 328 to 479 m3·ha–1. Spruce achieved higher radial growth, but its growth variability was higher than that of pine. Compared to precipitation, temperatures had a greater influence on the radial growth of both tree species, especially in the growing season. In terms of diversity, mixed stands achieved significantly higher structural differentiation and overall diversity compared to monospecific variants. Mixed stands can achieve higher production potential, diversity, and especially resistance to climatic extremes in the lowland regions of the Czech Republic. The differences between mixed stands and monocultures, i.e. the effect of tree species mixing, depend on the appropriate proportions of tree species and their spatial pattern.

Forest as a source of renewable material to reduce the environmental impact of buildingsOriginal Paper

Hana Svobodová, Petra Hlaváèková

J. For. Sci., 2023, 69(10):451-462 | DOI: 10.17221/65/2023-JFS


Construction sector has high environmental impact throughout entire life cycle of buildings. One way to reduce the impact is to use building materials with the lowest possible environmental impact – such as wood. The use of wood-based building materials can improve the overall environmental balance of buildings. Compared to other materials, wood probably has the best environmental performance. These findings are particularly significant in the context of the environmental and legislative situation in Europe and the Czech Republic and may be one of the reasons for the increasing number of new wood-based buildings. The main reason for the research is to highlight the potential of wood as an ecological renewable material with multiple applications in all sectors of the national economy, especially in the construction industry. This paper aims to deepen the knowledge of the environmental specifications of building materials, especially wood, highlight its benefits and verify that building with natural and eco-friendly materials is less costly with lower environmental impacts. To illustrate the environmental impact of the construction industry, a case study comparing house variants was conducted to find the most suitable combinations of materials in terms of economic, environmental, and social aspects. It was found that from a sustainable development perspective, building with green materials generally means lower environmental impacts measured by e.g. global warming potential and embodied energy. This is particularly evident in the case of wood, which is not only a renewable material with advantageous thermo-technical and construction properties despite its low weight, but also stores carbon as it grows. The findings show that wood in the structure can reduce the cumulative environmental impact of the whole structure.

The importance of local faunal research of moths for plant protection: an example from an agricultural landscape in central EuropeOriginal Paper

Vendula Hrube¹ová, Hana ©efrová, Zdenìk La¹tùvka

Plant Protect. Sci., 2023, 59(4):348-355 | DOI: 10.17221/33/2023-PPS


The study was carried out in the agricultural landscape (mosaic of an urban environment, gardens, grassland, fields, small forests and semi-natural non-forest habitats) in central Europe (southeast Czechia) in 2021. A light trap was used for trapping (207 nights). A total of 485 moth species and 5 170 individuals were captured. Eurytopic species dominated the area, 72% of species and 89% of individuals. Fifty-nine species are considered pests (12%), representing 25% of individuals. The seasonal dynamics of selected harmful species were evaluated and discussed. Species of semi-natural dry and wet habitats were represented by 14%, i.e. a proportion comparable to pests, but with only 4% of individuals. The numbers of species and individuals recorded and the Shannon-Wiener diversity and evenness indices are lower than at natural sites. Yet, overall biodiversity is relatively high, including the presence of some rare, ecologically, or zoogeographically remarkable species.

Comparative analysis of phenolic, flavonoid and antioxidant content in root vegetables from organic and conventional productionOriginal Paper

Zoranka Male¹eviæ, Mirjana Jovoviæ, Aleksandra Govedarica- Luèiæ, Marko Petkoviæ

Hort. Sci. (Prague), 2023, 50(4):283-289 | DOI: 10.17221/26/2022-HORTSCI

Vegetables and their products have a low caloric value. Root vegetables are rich in bioactive compounds such flavonoids, polyphenolic acids, carotenoids. It also contains a some percentage of other functional components that can significantly affect human health.In order to achieve a high yield, excessive fertilization with nitrogen fertilizer is performed, which worsens the quality of vegetables. The aim of this paper is to analyze the impact cultivation system on the content of total phenolics and flavonoids, as well as a comparative assessment of their antioxidant activity in selected samples of vegetables. The antioxidant activity was studied using DPPH, and ABTS assays. The total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were determined using Folin-Ciocalteuand and Aluminium chloride colorimetric methods, respectively. The highest content of total phenolics was determined for parsley from conventional production (427.38 mg GAE/100 g fresh sample), parsley from organic production the richest source of flavonoids (54.92 mg GAE/100 g fresh sample). Other samples of vegetables from conventional production had a lower flavonoid content compared to organic production. It was confirmed that the antioxidant activity of the analyzed vegetables in the maximum correlation with the content of total phenolics (R2 = 1). Organic samples of vegetables were characterized by a significantly higher content of flavonoids compared to vegetables grown conventionally. Organic production could be a good method to increase the concentration of bioactive compounds with antioxidant properties in vegetables.

Camelina sativa as a sustainable and feasible feedstuff for broiler poultry species: A reviewReview

Yazavinder Singh, Marco Cullere, Eva Tùmová, Antonella Dalle Zotte

Czech J. Anim. Sci., 2023, 68(7):277-295 | DOI: 10.17221/29/2023-CJAS

Camelina sativa can be identified as a promising oilseed crop due to its short growth cycle, tolerance to drought and frost, low-input requirements, resistance to pests and diseases, feed, and non-feed applications. Compared to other Brassicaceae family plants, camelina is mainly distinguished by high levels of n-3 polyunsaturated fatty acids and antioxidant content. However, camelina contains secondary plant metabolites, such as glucosinolates, phytic acid, sinapine, etc., and their presence limits the use of camelina by-products (oil, seed or cake) in poultry feeding. The breakdown of these compounds forms complexes that can inhibit digestive enzymes, reduce the absorption of nutrients, and ultimately modify product quality. The content of these anti-nutritional compounds and plant seed quality can be modified by various techniques: hybridisation, mutation induction, gene engineering, etc. Moreover, methods such as infrared irradiation, multi-enzyme and copper supplementation, etc., can counter or mitigate the effect of plant secondary metabolites present in camelina seed or cake. In general, dietary inclusion of camelina seed or cake at high inclusion levels (> 10%) worsened the nutrient digestibility and thus reduced growth performances. However, carcass traits and meat proximate composition were comparable in birds-fed diets containing camelina by-products. The fatty acid profile of meat cuts and abdominal fat was significantly higher in alpha-linolenic acid and lower n-6/n-3 ratio, thus promoting the healthiness of products for human consumption. Also, the dietary inclusion of camelina did not modify the sensory profile of the products. The present article is a comprehensive and critical review of research carried out to improve the quality of camelina and its by-products to be used in broiler poultry feeding. This review gives information on the feeding value of camelina by-products, as well as a survey of the literature on their use in poultry diets to evaluate digestibility, performance, carcass traits, and meat quality.


Evaluation of silver fir provenances at 51 years of age in provenance trials in the Pøedhoøí Hrubý Jeseník and Nízký Jeseník Mts. regions, Czech RepublicOriginal Paper

Martin Fulín, Jaroslav Dostál, Jiøí Èáp, Petr Novotný

J. For. Sci., 2023, 69(2):44-59 | DOI: 10.17221/181/2022-JFS



In 2021, measurements were done at two international provenance research trials for silver fir originating from the same series of experiments. The investigation was carried out in the location Vítkov and Úsov, where both trials were established. Biometric data (tree height, diameter at breast height) were measured and qualitative traits (stem shape, occurrence of stem forking, stem damage, bark pattern, and defoliation) were assessed during the early mature stage of the experiment. Overbark stem volume and per-hectare standing volume were also calculated. Sixty-five provenances of domestic and foreign origin were evaluated in both trials. Although the results do not indicate unequivocally the most suitable or most productive provenance in the trials, provenances of Czech origin including the ones originating from the surrounding natural forest areas perform consistently better than the average. The least productive provenances, on the other hand, were those from parts of Bulgaria, Austria, and especially Italy, which achieved the poorest results even in stem shape. In Czech conditions, therefore, Italian fir provenances have not proved so successful as they have in the United Kingdom.

Effects of saline water and N levels on eggplant (Solanum melongena L.) fruit yield, water productivity, and nitrogen use efficiency by drip and surface flood irrigationOriginal Paper

Seema, Rita Dahiya, Ram Prakash, Vijay Pal Singh Panghal, Manoj Kumar Gora

Hort. Sci. (Prague), 2023, 50(1):32-44 | DOI: 10.17221/11/2022-HORTSCI

Due to a scarcity of freshwater resources, agriculture is dependent on the use of poor quality water for irrigation in arid and semi-arid regions. Hence, the effective use of poor quality water requires pioneering water management and nitrogen fertilizer practices for increasing yield and resource efficiency. This study aimed to investigate the effect of saline water levels, nitrogen fertilizer, and irrigation methods on eggplant yield, water productivity, NPK uptake, and nitrogen use efficiency. The experiment was conducted in 2019 and 2020 under drip (IM1) and surface flood irrigation (IM2). The treatments included three saline water levels i.e. canal water (SW1), ECiw=2.5 dS/m (SW2), and ECiw=5.0 dS/m (SW3) along with the three nitrogen levels of 75% (N1), 100% (N2), and 125% (N3) of the recommended dose of nitrogen. Application of saline water using IM1 reduced the ECe by 41.8% (SW2) and 34% (SW3) over IM2. The fruit yield, water productivity (WP), NPK uptake, and nitrogen use efficiency (NUE) was increased by 22%, 127.6%, 39.8%, 16.6%, 11.8%, and 23.8% under IM1 over IM2, respectively. A high saline water level under IM2 can cause more reduction in fruit yield, NPK uptake, and water use. Applying saline water through IM1 improves fruit yield, WP, and NUE by 13-32.8%, 104.1-147.3%, and 10.5-35.2% as compared to IM2. We found that saline water and N applied by drip improved eggplant yield, water productivity, and NPK uptake. It is concluded that irrigation water and nitrogen fertilizer consumption are optimized when saline water is applied through drip irrigation.

Corporate governance, ownership concentration and performance of European agricultural companies: New empirical evidenceOriginal Paper

Graþiela Georgiana Noja, Mirela Cristea, Nicoleta Sîrghi, Oana-Ramona Socoliuc Gurițã, Ioana Vãdãsan, Daniel Cîrciumaru

Agric. Econ. - Czech, 2023, 69(4):151-161 | DOI: 10.17221/78/2023-AGRICECON


Considering the relevance of the agricultural sectors for the European countries' development, but also the volatile features of agriculture, with unforeseen risks induced by climate, ensuring durable economic progress is foremost for the companies. This paper aims to assess the associations of the key parties in corporate governance (directors, managers, advisers, and shareholders), employees and the independence level with the main outcomes and capacity/size of the European companies operating in agriculture, fishing, and aquaculture activities. Using a newly compiled and complex dataset of 3 184 active companies from Europe, provided by the ORBIS database, advanced modelling approaches were employed, based on the robust regression (RREG) and Gaussian Graphical Model (GGM). The main findings emphasised that: directors, managers, and advisors had a strong positive influence on the firms' size, boosting their turnover, and the shareholders' funds; advisors induced positive connections with the companies' liquidity; the number of employees exerted positive impacts on the firms' size and outcomes of these companies; the independence level exerted a negative impact on the firms' size and outcomes. Finally, specific measures must be addressed to primarily reconsider the number of directors and managers and the shareholders' participation in the ownership of these companies due to their unfavourable exerted effects.

Detection of Coxiella burnetii and characterisation by multiple-locus variable-number tandem repeat analysis in bovine bulk tank milk samplesOriginal Paper

B Yanmaz, EK Ozgen

Vet Med - Czech, 2023, 68(5):185-190 | DOI: 10.17221/87/2022-VETMED

Coxiella burnetii is the aetiological agent of Q fever, which is highly prevalent in Turkiye, but information on the genetic profiles of the bacterium is limited. This study aimed to investigate the presence of C. burnetii in bovine bulk tank milk (BTM) samples by polymerase chain reaction (PCR) and to investigate the genotypes by means of multiple-locus variable-number tandem repeat analysis (MLVA). A total of 25 markets that sold raw cow’s milk were analysed by conventional PCR analysis. An MLVA analysis was performed at six loci, namely MS23, MS24, MS27, MS28, MS33, and MS34, to determine the genotypic variations of C. burnetii found in the positive DNA samples. The DNA of C. burnetii was detected in 16% of the BTM samples. The C. burnetii strains identified in the bovine milk samples collected in this study were found to belong to the same genotypic group as those detected in the bovine milk samples gathered in Greece. As a result, both the presence and genotyping studies of C. burnetii on the BTM samples in Turkiye will contribute to the determination of the geographical distribution of the agent.

Improving the stability of soil aggregates using soil additives and revegetation by grasslandOriginal Paper

Markéta Mayerová, Tomá¹ ©imon, Martin Stehlík, Mikulá¹ Madaras

Plant Soil Environ., 2023, 69(6):282-290 | DOI: 10.17221/123/2023-PSE


Soil aggregate stability (SAS) is an important factor for soil quality and fertility. There are limited possibilities to influence this soil property, but one investigated method is the application of additives which have the potential to improve SAS. We established a four-year field experiment on a clay-loam Luvisol with poor soil structure to monitor SAS following the application of additives and grassland revegetation. Treatments included: (1) the untreated control; (2) compost; (3) biochar; (4) liming; (5) cattle manure; (6) woodchips; (7) woodchips + fungi inoculation; (8) pellets; (9) pellets + fungi; (10) hydrogel and (11) the change of arable land to grassland. The lowest 23.39% average SAS value was recorded for the untreated control, and then 23.92% for lime treatment, and the highest 27.69% average value was for hydrogel treatment, followed by woodchips with 27.22% and woodchips + fungi with 27.02%. A significant SAS increase of more than 200% was evident on the grassland two years after the trial’s establishment, and this was also associated with other improved physical and chemical soil properties. Finally, while most of our applied soil additives were relatively ineffective in agricultural practice, grassland revegetation is highly recommended for its rapid increase in soil aggregate stability.

Soil organic matter quality of variously managed agricultural soil in the Czech Republic evaluated using DRIFT spectroscopyOriginal Paper

Lenka Pavlù, Jiøí Balík, Simona Procházková, Petra Vokurková, Ivana Galu¹ková, Ondøej Sedláø

Soil & Water Res., 2023, 18(4):281-291 | DOI: 10.17221/89/2023-SWR

This study focuses on the effect of agricultural soil management on soil organic matter (SOM) composition. The addition of manure and crop residues was tested under different pedoclimatic conditions. The quality of SOM was assessed using diffuse reflectance infrared spectroscopy. The following parameters were calculated from the spectra:   sum of aliphatic bands (ΣAL), aromatic bands at wave numbers 1 620 and 1 520 cm–1 (AR1620 and AR1520), potential wettability (PWI), organic matter quality (OMQ), and decomposability (DI) indexes. The addition of manure or crop residues may not cause fundamental changes in the qualitative composition of SOM. Rather, pedoclimatic conditions determine which components are fixed in the soil on a long-term scale. A dominant effect of soil type was found in the distribution of all spectral parameters studied using main effect ANOVA. The main differences between the soil types concern the aromatic, oxygen and nitrogen groups contained in the SOM. Chernozems are soils with higher OMQ and DI, whereas Cambisols are soils with low OMQ and DI and the highest PWI. The stabilisation of SOM in soils can thus be based on the biochemical persistence of organic molecules, their specific affinity for minerals and the formation of aggregates that protect enclosed SOM.

Diverse role of basic Helix-Loop-Helix (bHLH) transcription factor superfamily genes in the fleshy fruit-bearing plant speciesReview

Noor Muhammad, Nisar Uddin, Muhammad Khalil Ullah Khan, Niaz Ali, Kishwar Ali, David Aaron Jones

Czech J. Genet. Plant Breed., 2023, 59(1):1-13

The basic Helix-Loop-Helix (bHLH) superfamily is the most widespread family of transcription factors in eukaryotic organisms, which can activate the expression of genes by interacting with specific promoters in the genes. The bHLH transcription factors direct the development and metabolic process of plants, including flowering initiation and secondary metabolite production, by attaching to specific sites on their promoters. These transcription factors are essential for encouraging plant tolerance or the adjustment to harsh environmental conditions. The involvement of bHLH genes in anthocyanin formation in fleshy fruit-bearing plants, as well as the role of these genes in response to stimuli including drought, salt, and cold stress, are discussed in this article. New concepts and goals for the production of stress-tolerant fruit species are suggested. Furthermore, solid evidence for the critical role of bHLH genes in the growth and development, as well as anthocyanin biosynthesis in fleshy fruit plants, are also presented in this article. This review identifies several future research directions that can shed light on the roles of bHLH genes in fruit-bearing plants and will assist the use of these genes in efforts to breed fruit crop varieties that are more resistant to stress. Generally, there has been little research carried out on the role of bHLHs transcription factor family genes in fleshy fruit-bearing plant species and more in-depth studies are required to fully understand the diverse role of bHLH genes in these species.

Ambient background and quality reference values for trace metals in soils from AlgeriaOriginal Paper

Abdelkader Laribi, Charles Shand, Renate Wendler, Brahim Mouhouche, Stephen Hillier, Gilles Colinet

Soil & Water Res., 2023, 18(1):33-42 | DOI: 10.17221/143/2021-SWR

The establishment of the reference ambient background concentrations (ABCs) and quality reference values (QRVs) for trace metal (TM) concentrations in soils are required for the environmental assessment and any implementation of a protective action. This information is lacking for soils of the eastern Mitidja plain, which is an important agricultural production area in Algeria. Data for the aqua regia extractable Cd, Cr, Cu, Fe, Ni, Pb and Zn concentrations from 180 composite topsoil samples taken across the Mitidja plain in a stratified random pattern were statistically analysed. Descriptive statistical methods and linear regression equations were applied to determine the upper limit of the ABCs for the TMs. After removal of outliers, the derived QRVs were: Cd 0.24, Cr 62.1, Cu 99.3, Fe 45 590, Ni 47.7, Pb 33 and Zn 115 mg/kg. Iron is a macro element in the soils, but is included as its concentration can be used to normalise the concentrations of the other elements. The derived QRVs are similar or less than those reported for other regions of the world, apart from Cu, where a wide range (36 to 206 mg/kg) is reported. These reference values can be used to identify areas that may require follow-up surveys or to identify priority sites for decision making.

Molecular mechanism of drought stress tolerance in barley (Hordeum vulgare L.) via a combined analysis of the transcriptome dataOriginal Paper

Mostafa Alamholo, Alireza Tarinejad

Czech J. Genet. Plant Breed., 2023, 59(2):76-94 | DOI: 10.17221/69/2022-CJGPB

One of the main issues addressed by phytology in recent years has been plant tolerance mechanisms for abiotic stress. No combined analysis has been made to identify the genes involved in drought stress tolerance. The meta-analysis of microarray data related to drought stress was analysed by the R software packages and showed 3 029 upregulated genes and 3 017 downregulated genes. The upregulated genes were mostly related to the drought tolerance protein, abiotic stress response, and the Cys2His2 Zinc Finger Transcription Factor (C2H2 zinc finger TF). The downregulated genes were mainly related to the late embryogenesis abundant protein, abiotic stress response, and the basic leucine zipper (bZIP) TF. The common gene ontology (GO) terms in the upregulated and downregulated genes were mainly related to the metabolic process, response to stimulus, cellular metabolic process, and photorespiration. The up and down meta-differential expressed genes (meta-DEGs) mainly belonged to the those following Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways including: the biosynthesis of secondary metabolites, plant hormone signal transduction, mitogen-activated protein kinase (MAPK) signalling pathway, and RNA degradation. Moreover, in the upregulated and downregulated genes, the TFs with a high percentage mainly belonged to the Teosinte branched1/Cincinnata/proliferating cell factor (TCP), basic helix loop-helix (bHLH) and bZIP. Next, the hub upregulated genes were mainly related to the thiamine biosynthesis protein thiC, 4-hydroxyphenylpyruvate dioxygenase, ribose-5-phosphate isomerase precursor and heat shock protein. The hub downregulated genes were mainly associated with the elongation factor Ts, aldehyde dehydrogenase, and trigger factor. Finally, the data from the present meta-analysis were compared with previous studies on the qRT-PCR results and their up and down expressions were confirmed. Based on the findings of the current study, novel insights into the drought stress molecular response can be provided and various candidate genes can be introduced for barley drought stress tolerance breeding.

Bioremediation approaches for oil contaminated soils in extremely high-mountainous conditionsOriginal Paper

Nurzat Totubaeva, Zhiide Tokpaeva, Janarbek Izakov, Mirlan Moldobaev

Plant Soil Environ., 2023, 69(4):188-193 | DOI: 10.17221/433/2022-PSE

Development of methods for bioremediation of soils contaminated with petroleum products is one of the most urgent tasks of our time. This task is more difficult to perform in high-mountainous landscapes, at an altitude of more than 4 000 m a.s.l. Moreover, these high-mountain ecosystems are the most vulnerable to various kinds of anthropogenic impacts, and therefore the relevance of bioremediation is obvious. The research was conducted in the high-altitude ecosystems of the Kyrgyz Republic at the Kumtor mine. In this study was carried out on the bioremediation of oil contaminated soil using biostimulation, bioaugmentation and biostimulation + bioaugmentation remediation techniques for 90 days in the climatic conditions of high mountain region. The biostimulation treatment showed the highest total petroleum hydrocarbons (TPH) biodegradation percentage 62.78% compared to the bioaugmentation 50.63% and biostimulation + bioaugmentation 49.11%. Thus, the method of biostimulation proved to be the most effective method for bioremediation of soils contaminated with petroleum products. The application of this method could be one of the successful methods of recycling contaminated soils. This study demonstrated the possibility of restoring TPH-polluted soils using biological methods of soil treatment in climatic cold conditions of high mountains.

Effect of silicon dioxide application and potassium levels on morphophysiological properties and storable seed yield of hybrid super sweet maize (Zea mays L. 'Elika') under drought stressOriginal Paper

Seyed Gholam Reza Hosseini, Behzad Sani, Hamid Mozafari, Hamidreza Zabihi, Faezeh Rajabzadeh

Plant Soil Environ., 2023, 69(7):324-332 | DOI: 10.17221/302/2022-PSE


In this experiment, we investigated the effects of drought combined with exogenous silicon (Si) and potassium application on super sweet corn growth and development. Drought stress caused decreases in the stem diameter, leaf area, cob length, cob diameter, 100 seed weight, seed number, cob yield, biologic yield, and relative water content (RWC), but proline content and catalase activity were higher under drought stress conditions. The results of a two-year experiment showed that potassium sulfate application and foliar application significantly increased RWC in drought stress conditions, and the highest increase was related to treatment with potassium sulfate in an amount of 25 kg/ha. Under normal irrigation conditions, with 25 kg of potassium sulfate per ha and Si foliar application, the maximum cob diameter (5.85 cm) was observed. Si application did not significantly affect proline content under normal irrigation conditions but increased proline content under drought stress. The highest proline content (10.77 mmol/g fresh weight) was recorded in the Si application using 25 kg of potassium sulfate per ha under drought stress conditions. Also, applying potassium sulfate with silicone foliar spraying had no significant effect on biologic yield under normal irrigation conditions. However, under drought stress treatments, biologic yield increased by applying 15 and 25 kg/ha of potassium sulfate and Si foliar spraying. In summary, applying potassium sulfate and exogenous Si can enhance the antioxidant system of the plant, promote the RWC, thus improving biologic and cob yield, and enhance the drought resistance of super sweet corn.

Modelling of alluvial soil quality and production in permanent banana Harton plantationsOriginal Paper

Nelino Florida Rofner, Cesar Augusto Gozme Sulca, Alex Rengifo Rojas

Soil & Water Res., 2023, 18(3):192-203 | DOI: 10.17221/22/2023-SWR

Plantain is the most important crop for the Peruvian Amazonian population, developed in recent alluvial soils rich in nutrients, but fragile and susceptible to degradation. Therefore, the impact of permanent cultivation was evaluated, through modelling, on indicators of recent alluvial soil quality and production in plantations of Musa paradisiaca L. var. Harton, in the Aguaytia River valley, Peru. The treatments were areas with permanent plantain plantations of 2 (T0), 15 (T1), 4 (T2), and 5 (T3) years of management, evaluating soil physicochemical indicators and plantain production indicators. The results show significant differences for all yield and soil indicators evaluated, except for bulk density (Bd), clay fraction, soil organic matter (OM) and N. The modelling determined a significant positive impact on Bd and a significant negative impact on pH, P, pseudostem diameter and height, commercial fingers and bunch weight. In conclusion, the modelling shows trends of quality and yield reduction in 15 years of permanent management of plantain Var. Harton, and compromises the sustainability of the agroecosystem in the medium term.

Changes in the behaviour of Czech Fleckvieh dairy cows during the day under optimal ambient temperature conditions in the barnOriginal Paper

Milan Veèeøa, Stanislav Navrátil, Tomá¹ Kopec, Daniel Falta, Gustav Chládek, Francois Stefanus Lategan

Czech J. Anim. Sci., 2023, 68(9):365-371 | DOI: 10.17221/23/2023-CJAS

In the experimental section of the barn (which made up 25% of the barn), 103 cubicles in free stall barn were selected in three rows, housing 98 dairy cows of Czech Fleckvieh cattle. Monitoring was done for one calendar year, once a week. From this period, 16 days with temperatures from 0.5–15.0 °C were selected for quantification. Observations were continuously recorded at 10:00 am (one hour after the coming of the last cow from the milking parlour), at hourly intervals until 7:00 pm. Ten observations were carried out every day of the monitoring period. In total, 15 680 individual observations were recorded. The microclimatic parameters (temperature, relative humidity) were monitored within the barns continuously at 15-minute intervals using three data logger sensors. Changes in the proportion of lying to standing dairy cows were observed during the day. A steady trend of a reduced ratio of lying dairy cows during the day (from 70% to 40%) in favour of standing dairy cows was observed. The optimal value of the cow comfort index – CCI (85%) was not reached in any monitored part of the day. The number of dairy cows lying on their left sides increased from 50.4% to 56%, especially after feeding (at 4:00 pm). Differences were found in the proportion of lying and standing cows (< 0.05) at an optimal microclimate during the day. A significant preference for the left side when lying down was also found.

Canine oral melanoma with suspected pulmonary metastasis: Combination of immunotherapy and tyrosine kinase inhibitor treatmentCase Report

KR Kim, DH Kim, MJ Jung, DM Sihn, SW Jeong, JH Kim

Vet Med - Czech, 2023, 68(12):477-482 | DOI: 10.17221/90/2023-VETMED

This case report follows a 10-year-old castrated male Miniature Schnauzer dog presented with a history of incomplete surgical resection of an oral malignant melanoma (amelanotic type) on the right mandible. Melanoma vaccine therapy was administered due to incomplete surgical resection, however, new masses were detected on the contralateral mandible and suspected pulmonary metastasis occurred at 2 weeks and 7 months, respectively, following the first melanoma vaccination. At the time of detecting the pulmonary metastasis, targeted chemotherapy was initiated with the owner’s consent using imatinib (10 mg/kg/day, p.o.), a tyrosine kinase inhibitor (TKI). The patient did not show any significant adverse events related to both anticancer treatments. Three months following the first dose of imatinib, the absence of the suspected pulmonary metastatic nodules on radiography indicated complete remission. In conclusion, this report describes the achievement of clinical remission of suspected pulmonary metastatic oral malignant melanoma and an extension of survival time in a dog given a combination treatment of immunotherapy and tyrosine kinase inhibitor.

Site classification vs. wood production: a case study based on Silver fir growth dynamics in the Western Carpathians

M. Bo¹eµa, R. Petrá¹, ©. ©melko

J. For. Sci., 2011, 57(10):409-421 | DOI: 10.17221/34/2011-JFS

We analysed wood production on an example of Silver fir growth ability within site units defined in the site classification that is currently used in the Western Carpathians. It has arisen as a very important issue, since the site units have been widely used in forestry practice and, moreover, it represents one of the input variables of growth model. Research plots established for development of a yield model for Silver fir in the sixties were used. The Korf growth equation was used to model the Silver fir growth, since it showed the best fit to the data compared to other equations. The test of residual variance of the growth models and the test of regression coefficients of the growth models were employed to investigate the differences in top-height growth of Silver fir occurring on different sites. Results showed a very high variability of the top height development within the site units. Nevertheless, two main groups of sites being different from each other were recognized. But, significant differences in the height growth of fir between site units were found mainly in mature stands starting at the age of 60, which could be due to different soil depth and nutrient regime. Lastly, discussions about the approaches to site classifications all over the world showed many alternatives used to develop a classification scheme with different and in many cases unknown precision, and thus there is a need for the objectivity of classification.

Morphological and molecular characterization of Neoscytalidium isolates that cause canker and dieback in Eucalyptus and Chinaberry trees in IraqOriginal Paper

Dleen Naji Abdulrahman, Raed A. Haleem

Plant Protect. Sci., 2023, 59(1):92-105 | DOI: 10.17221/82/2022-PPS


Neoscytalidium Dimidiatum isolates are the most pathogens associated with sooty canker and dieback in the stem and twigs of Eucalyptus and Chinaberry trees in the Kurdistan region of Iraq. Young trees showed branch dieback and yellowing leaves. The symptoms were further developed to sooty canker and dieback appeared on the main branch and trunk. N. dimidiatum colonies on potato dextrose agar were dense white at first and became dark gray to black within seven to ten days. Arthric dark brown conidia (6.6x 4.3 µm) were observed in the chain of mycelium. The color of the colonies was white at the beginning, then eventually turned greenish in seven days, and finally became black. The fungus produced white to olivaceous aerial mycelium with chains of chlamydospores and arthroconidia. Conidia were initially hyaline, ellipsoidal to globose, 4.1-9.8 m × 2.8-3.5m, with muriform septa. The inoculated Eucalyptus and Chinaberry seedlings displayed necrosis streaks along with the barks and xylem of the inoculation points. Combined dataset of internal transcribed spacer (ITS), Nuclear Ribosomal Large Subunite (LSU), and Beta tublin 2a (Bt2a) using Maximum Likelihood and Maximum Parsimony analysis support the monophyletic on Neoscytalidium dimidiatum isolates from Iraq (N. hyalinum (No. B21), and Neoscytalidium novaehollandiae (No. B22)). This is the first time to report Neoscytalidium dimidiatum on Chinaberry in Iraq.

Short-term effects of tillage and leaf mulch on soil properties and sunflower yield under semi-arid conditionsOriginal Paper

Koena Rivonia Selolo, Jestinos Mzezewa, Jude Julius Odhiambo

Plant Soil Environ., 2023, 69(2):55-61 | DOI: 10.17221/160/2022-PSE

A study was conducted at the University of Venda Experimental Farm, Limpopo province, South Africa to determine the effects of tillage and mulching on selected soil properties, and yield of sunflower (Helianthus annuus L.). The experiment was laid out in a split plot design with three replications during the 2018/19 and 2019/20 cropping seasons. Treatments consisted of conventional tillage (CT) and minimum tillage (MT) and three levels of avocado leaf mulch (0, 6 and 12 t/ha). Bulk density (BD), aggregate stability (AS), infiltration rate (IR), soil water content (SWC) and grain yield were determined. Tillage had no significant effect on BD in either season but influenced SWC and sunflower grain yield. CT recorded a significantly higher AS than MT during 2018/19 cropping season. Tillage × mulch interaction was significant during 2018/19 season with CT at 12 t/ha mulch recording higher AS than the MT. IR was significantly influenced by tillage × mulch interaction in both seasons with MT recording higher IR than the CT during 2018/19. Avocado mulch had no significant effect on sunflower grain yield in either season but influenced SWC in 2019/20 season. It was concluded that avocado mulch could be a relevant component of conservation agriculture but long-term studies are needed to validate the benefits observed in this study.

Molecular diagnosis of red rot of sugarcane in Pakistan and in vitro control of isolated pathogen using rhizobacteriaOriginal Paper

Zimen Ahmad, Muhammad Asad Farooq, Amama Fatima, Syeda Gul Nisa, Sania Tabassum, Bushra Ismat, Sundus Waseem, Umer Iqbal, Asma Akbar, Urooj Haroon, Hassan Javed Chaudhary, Tauseef Tabassum, Ahmed Z Dewidar, Abdullah Alaklabi, Muhammad Farooq Hussain Munis

Plant Protect. Sci., 2023, 59(2):124-133 | DOI: 10.17221/45/2022-PPS

Sugarcane (Saccharum officinarum L.) is a key cash crop, and its production is influenced by a variety of phytopathogens in different parts of the world. During consecutive field surveys, sugarcane stalks with red rot symptoms were observed in three provinces of Pakistan (Punjab, Sindh, and Khyber Pakhtunkhwa). Cane samples with visible symptoms were plated on Potato Dextrose Agar (PDA) media. Morphological and microscopic observations identified this pathogen as Colletotrichum falcatum. Comparative molecular study of amplified sequences of β-tubulin (Bt) and Actin (ACT) genes showed 100% similarity and ITS sequence showed 99% similarity with C. falcatum. For in vitro control of red rot, eight bacterial strains from the rhizosphere of sugarcane were isolated. These strains showed variable growth inhibition of C. falcatum in dual culture method. Among all tested strains, Bacillus amyloliquefaciens and B. altitudinis exhibited best antifungal activities. Based on these results, tested bacterial strains (B. amyloliquefaciens and B. altitudinis) can be recommended as effective biocontrol agents to manage red rot disease of sugarcane.

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