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Results 1231 to 1260 of 5716:

Different technologies of potato (Solanum tuberosum L.) cultivation and their effects on water runoff and soil erosionOriginal Paper

Jiøí Záruba, Pavel Formánek, David Kincl, Jan Vopravil, Helena Kusá, Pavel Rù¾ek, David Kabelka, Pavel Kasal

Plant Soil Environ., 2023, 69(5):238-246 | DOI: 10.17221/149/2023-PSE

Surface runoff and soil losses in the case of potato cultivation using de-stoning technology on gentle slopes (Haplic Cambisol) were studied in 2020–2022. Different ridges shapes were compared: control (smooth shaped ridges), pits, pits plus loosening, pits plus loosening plus cover crop (Triticum aestivum L.) sowing in trail furrows. Runoff and soil losses were studied approximately 1 and 2 months after planting potatoes. The obtained results showed the highest reduction of surface runoff and soil losses in the treatment with cover crop sowing. In this variant, soil losses were reduced by 65–81% (1 month after planting) and 54–85% (2 months after planting) in case of simulated rainfall on the soil with natural moisture (or these losses were reduced by 51–93% and 50–76% in case of 15-min rainfall). On average, tuber yields reached 29.4 t/ha (pits + loosening) to 30.6 t/ha (pits) in 2020–2022. The different abilities of the tested shapes of ridges and furrows to retain water did not significantly affect the achieved yields of tubers, as rainfall was not a limiting factor in the monitored period. The yield differences among all tested treatments reached units of tons per hectare if the entire dose of nitrogen was applied at planting. Splitting the total nitrogen dose (50% at planting, 50% at loosening) gave significantly (P < 0.05) higher yields (34.2 t/ha) than a single application at planting. The treatment pits plus loosening with fertilisation provided a 19–26% higher tuber yield than pits plus loosening with a total N dose applied at planting.

Mechanization’s impact on agricultural total factor productivityOriginal Paper

Yuxin Cui

Agric. Econ. - Czech, 2023, 69(11):446-457 | DOI: 10.17221/291/2023-AGRICECON

Agricultural mechanisation is rapidly increasing in China and will have an increasing impact on agricultural total factor productivity (TFP) in the future. This study uses panel data from 27 provinces in China, spanning the years 2001‒2020, to measure agricultural TFP, and estimates the effects of mechanisation on TFP, technical efficiency, and technological progress. The results reveal that the level of agricultural mechanisation can promote TFP. TFP has a cumulative effect in the previous period, which can also significantly affect TFP in the current period. The level of agricultural mechanisation improves technical efficiency and promotes technological progress, but this is not statistically significant. Regional heterogeneity exists in mechanisation’s effect on agricultural TFP, with the largest effect occurring in the group with the lowest TFP. Therefore, efforts to promote the use of agricultural machinery should increase. China’s agricultural machinery subsidy policy must be further adjusted, and agricultural machinery research investments increased, while the government must address the heterogeneity between regions and focus on developing agricultural mechanisation in the central and western regions.

Insecticidal activity of essential oil from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Bruchidae)Original Paper

Ruchuon Wanna, Phirayot Khaengkhan, Darika Bunphan, Benjapon Kunlanit, Parinda Khaengkhan, Hakan Bozdoğan

Plant Protect. Sci., 2023, 59(4):369-378 | DOI: 10.17221/69/2023-PPS

Mungbean seeds [Vigna radiata (L.)] are easily damaged by insects during storage, and essential oils (EOs) have proved effective for controlling insect infestation. This research study assessed the bioactivity of EO from Jasminum sambac (L.) Aiton against Callosobruchus maculatus (F.). The chemical composition of EO was analysed by a gas chromatograph-mass spectrometer (GC-MS). All experiments were conducted following a completely randomised design (CRD) with four replications of the residual contact and seed dressing bioassays. Results indicated that J. sambac EO contained 35 compounds (97.587%), with the main component 3-hexen-1-ol benzoate. Residual contact toxicity LC50 values of this EO on adult C. maculatus at 24, 48, and 72 h were 5.01, 4.00, and 3.13 µL/mL, respectively. J. sambac EO at 8 µL/L showed the highest residual contact efficacy against C. maculatus, killing up to 100% in 72 hours. The highest concentration of J. sambac EO (1 mL/kg) gave optimal protection against C. maculatus within 4 and 5 days with 100% mortality. This concentration showed 100% inhibition of adult F1 progeny emergence, with no seed damage and weight loss of V. radiata L. after 30 days of exposure, and not significantly different from 0.8 mL/kg. Results indicated that J. sambac EO effectively prevented C. maculatus infestation and it could be used as an alternative to commercial chemical insecticides.

Understanding the role of ecotypic factors in the early growth of Pinus sylvestris L.Original Paper

Jakub Hejtmánek, Jan Stejskal, Daniel Provazník, Jaroslav Èepl

J. For. Sci., 2023, 69(12):539-549 | DOI: 10.17221/102/2023-JFS

The ecological significance of Scots pine (Pinus sylvestris L.) in Europe, especially in areas devastated by bark beetles, has led to its consideration as a substitute for Norway spruce. This pioneering species boasts sun and drought tolerance, fast growth, and wood industry value. To gauge its potential, we examined two ecotypes across two test sites over two years, focusing on height and growth increment. Through statistical analysis employing R software and linear mixed models, we assessed heritability, genotype by environment interaction, and spatial correlations. Both ecotypes exhibited significant differences in height and increment, varying by year and site. Heritability was higher in the second year, with increment showing greater stability. Genetic correlations between sites were evident, suggesting stable increment ranking across locations. These findings underscore the role of ecotypic variation in Scots pine growth, advocating for its consideration in reforestation. Acknowledging such dynamics is vital for effective forest management and reforestation in Central Europe, promoting sustainability and informed decision-making. Further research will enhance this understanding of preserving and enhancing the region's tree populations.

Combined effect of nitrogen and phosphorous fertiliser on nitrogen absorption and utilisation in riceOriginal Paper

Yating Zheng, Hong Chen, Guotao Yang, Rudan Wang, Nabi Farhan, Chong Li, Cheng Liang, Kaiqin Shen, Xuechun Wang, Yungao Hu

Plant Soil Environ., 2023, 69(1):25-37 | DOI: 10.17221/420/2022-PSE

The objectives of this study were to investigate the nitrogen (N) and phosphorus (P) balance fertilization strategy in paddy fields, and to evaluate the effects on N uptake and utilization in rice. In 2017-2018, the experiment was conducted using Deyou4727 hybrid rice with four different P fertilizer levels (0, 30, 60, and 90 kg/ha), marked as P0, P1, P2, P3 in turn, and four different N levels (0, 90, 150, and 270 kg/ha), similarly marked as N0, N1, N2, N3 in turn. The results showed that in the N-insufficient (N0, N1) environments, the P1 treatment increased N uptake and promoted transfer to the grain. However, high-P (P3) application increased the dry matter accumulation than other P levels, but limited the production and translocation of dry matter to some extent. In N-sufficient (N2, N3) environments, P2 level increased crop yield and N use efficiency by 11.35% and 37.01%. Unlike P2, none-P (P0) and high-P levels decreased rice dry matter translocation and transport capacity, which further affected N uptake and utilization in N-sufficient environments. Overall, the combination of the N application rate of 90 kg/ha and P application rate of 30 kg/ha, N application rate of 150, 270 kg/ha, and P application rate of 60 kg/ha had a high yield; strong nutrient accumulation and transfer ability. It was more inclined to balance N and P, which was beneficial to plant N absorption and utilization.

Evaluation of low temperature drying characteristics of fresh tea leaves (Camellia assamica) in an environmental chamber using mathematical modelsOriginal Paper

Anindita Sharma, Partha Pratim Dutta

Res. Agr. Eng., 2023, 69(2):55-64 | DOI: 10.17221/28/2021-RAE

Low-temperature drying (withering) is the first stage in black tea processing. Determination of appropriate end moisture content of green tea leaf as well as temperature and relative humidity (RH) maintained during withering eventually aid the final quality of the processed tea. Therefore, the tea leaf withering (partial drying) properties were evaluated in an environmental chamber using mathematical models. The temperatures and RH considered were 25, 30, 35 °C and 80, 85, 90%, respectively. A total of nine combinations of temperature and RH were considered by keeping one parameter constant. The conditions were taken adhering to that of the climatic conditions of Assam, India. The withering data from experiments were fitted into five drying models using the curve fitting method. The Page model gave better predictions with an R2 value of 0.9989 at 30 °C temperature and 90% RH. The total phenolic and flavonoid contents of the tea leaf samples were evaluated. The best results were 50.60 ± 0.02 mg GAE·g–1 (GAE – gallic acid equivalent) and 22.47 ± 0.01 mg QCE·g–1 (QCE – quercetin equivalent) at 30 °C withering temperature.

Ameliorative effect of yeast cell walls on broiler chickens’ performance and gut health under coccidiosis challengeOriginal Paper

Shawkat Abdulrazaq M'Sadeq

Czech J. Anim. Sci., 2023, 68(8):346-355 | DOI: 10.17221/24/2023-CJAS

This study was conducted to evaluate the efficacy of yeast cell wall parts (YCW) in reducing the severity of coccidiosis in broiler chickens. One-day-old Ross 308 chicks (n = 320) were randomly allocated to 32 floor pens in two rooms with a 2 × 4 factorial arrangement of treatments. Factors were (1) challenge: negative or positive by room, (2) feed additive: control (none), anticoccidial (salinomycin at 60 mg/kg), YCW 0.1% or 0.2%. On day 8, none-challenged room was inoculated with saline, and challenged room was inoculated with 5 000 Eimeria tenella oocysts. Performance results showed that in challenged birds, feed conversion ratio (FCR) and weight gain (WG) were poorer than in unchallenged birds on day 24 and 35. Birds given anticoccidial and YCW had improved FCR and WG (P = 0.01) over the control group. Challenge and additive interactions were observed on day 24 and day 35 for FCR and WG (P = 0.01) and for feed intake on day 24 (P = 0.01). Challenged birds fed YCW on days 24 and 35 had higher WG and better FCR compared with both challenged and non-challenged controls and anticoccidial treatment. Coccidial challenge increased crypt depth (CD), villous tip and base width, and villous surface area and decreased villous height to crypt depth ratio (VH : CD) and villous height (VH). Birds fed YCW exhibited significantly decreased CD, villous tip width, villous base width, villous surface area and increased VH, VH : CD in comparison to the control group. Challenged birds fed YCW had significantly lower bursa of Fabricius follicle length compared to birds fed the control diet. Challenged birds had significantly increased serum alanine transaminase (ALT) and aspartate aminotransferase (AST) concentrations than non-challenged birds. In conclusion, these results demonstrated that the yeast cell wall has the ability to control coccidiosis.

Microalgae in lab-grown meat productionReview

Arturo Nickolay Rojas-Tavara, Alberto Jesus Donayre-Torres

Czech J. Food Sci., 2023, 41(6):406-418 | DOI: 10.17221/69/2023-CJFS


Reports have shown that meat production operations today contribute to the climate crisis, facilitating the occurrence of infectious diseases, and contributing to environmental pollution. Consequently, the public demands alternatives to traditional meat, such as in vitro manufactured meat. Several authors have suggested that improvements should be made in the manufacturing of cell-cultured meat to make a more sustainable and scalable process. They recently proposed using microalgae as a sustainable system to produce important nutrients such as oxygen from cellular waste molecules of animal cultures such as ammonia and carbon dioxide. In this review, we discuss recent advances of different microalgae applications in the production of lab-grown meat, with special emphasis on their use as a replacement for fetal bovine serum (FBS) or culture media, as well as its applicability as a source of cell oxygenation and waste upcycling to extend the life of animal cell cultures. Also, we discuss the implementation and limitations of these algae systems in large-scale in vitro meat manufacturing.

The interaction between the milk production, milk components with a low frequency of analysis and factors affecting the milk composition in dual-purpose Simmental cowsOriginal Paper

Daniel Falta, Lenka Zapletalová, Oto Hanu¹, Josef Kuèera, Milan Veèeøa, Gustav Chládek, Radek Filipèík, Tomá¹ Kopec, Francois Stefanus Lategan

Czech J. Anim. Sci., 2023, 68(3):99-110 | DOI: 10.17221/197/2022-CJAS


The aim of this study was to improve the understanding of the contribution of components typically found in milk, but which are not often included in analyses, to the nutritional status of dairy cows. This was undertaken by analysing the amount and composition of milk produced by Simmental dairy cows, a dual-purpose breed farmed in the Czech Republic. Apart from the more frequently analysed group of components in milk, a less frequently analysed group of components were also investigated. This group, typically, consists of the following components: urea, casein, citric acid, beta hydroxy butyrate (BHB) ketones and free fatty acids. The average content of urea, casein and citric acid in milk is 25.75 mg/100 ml, 2.96%, 0.15%, respectively. The influence of environmental factors on these indicators was evaluated, as well as the degree of hereditary establishment. These less frequently analysed components (indicators), as well as the more frequently analysed components of milk, are subject to several external influences, especially the influence of the breeder, the year and the season of calving. The content of these components varied significantly statistically during the lactation period and also in the order of lactation. The influence of a cow’s individuality and the degree of additive genetic background are evident, with estimated heritability coefficients ranging from 0.04 for the BHB ketone content to higher values, e.g., 0.28 for citric acid or 0.31 for the lactose content in milk. The relationships between the components of milk and the daily milk yield were also evaluated, and statistically significant negative correlations were found between the content of casein and the daily milk yield (–0.47) and between the lactose content and the number of somatic cells (–0.37).

Sustainable innovation in agriculture: Building competitiveness and business sustainabilityOriginal Paper

Pavla Vrabcová, Hana Urbancová

Agric. Econ. - Czech, 2023, 69(1):1-12 | DOI: 10.17221/321/2022-AGRICECON


To understand and promote the importance of business sustainability in agriculture as an important societal issue, one must use the circumstances to force modern-minded management to abandon the classical model of only complying with statutory obligations and to structure the knowledge to coordinate interdisciplinary approaches to ensuring sustainable innovation. The paper analyses the role of business sustainability in promoting sustainable innovation in agriculture. The study used a factor analysis applied to a sample of 183 companies (n1 = 183) and qualitative research through focus groups (n2 = 5). The main objective was to identify the factors influencing the innovated areas in relation to sustainability. The results of the factor analysis showed a six-factor solution: process approach, corporate social responsibility, quality management system, supply chain operation processes, demand for production, and employee performance.

Socioeconomic and technical factors determining the adoption of hedgerows around greenhouses in southeast SpainCase Study

Belén López-Felices, Juan Francisco Velasco-Muñoz, Isabel María Román-Sánchez, José Ángel Aznar-Sánchez

Agric. Econ. - Czech, 2023, 69(5):212-222 | DOI: 10.17221/49/2023-AGRICECON

Pest control is one of the ecosystem services most affected by the intensification of agriculture. Pests can lead to significant losses in crop yields and jeopardise food security. In this context, installing hedgerows around greenhouses is presented as an opportunity to improve the presence of natural enemies and favour the control of pests. However, the adoption of this practice has not spread among farmers. The objective of this article is to determine the factors that affect the decision to adopt hedgerows around greenhouses by studying the case of southeast Spain. A binary logistic regression model is developed from a farmer survey of 189 farmers in the study area. The variables that are significant when explaining the installation of hedgerows are the size of the farm, the expenses, the number of methods used to combat pests, technical advice, and environmental awareness. Based on these results, action measures are proposed to promote the adoption of this practice.

Inheritance and allelism of brown midrib trait introgressed in agronomically promising backgrounds in pearl millet (Pennisetum glaucum (L.) R. Br.)Original Paper

Shashi Kumar Gupta*, Ponnaiah Govintharaj

Czech J. Genet. Plant Breed., 2023, 59(3):176-187 | DOI: 10.17221/93/2022-CJGPB

The lignin content of forage crops significantly affects the livestock’s forage intake and its dry matter digestibility. The brown midrib (bmr) trait is known for its association with a reduced lignin content and increased digestibility. Pearl millet inbreds having the bmr trait were derived from two populations ICMV bmr and WRajPop bmr via continued selfing up to 6–8 generations. The results from the crosses revealed the presence of the same single recessive gene that controlled the bmr in both the populations. The stable expression of the bmr gene in the new genetic background indicated that there was no effect of modifier genes. Four inbreds were identified with the stable expression of bmr (three in ICMV 155 and one in the WRajPop background) with a high biomass potential, which can serve as a bmr source in future pearl millet forage breeding programmes.

Technological approaches applied in the design of gluten-free bakery productsReview

Rodica Siminiuc*, Dinu Țurcanu

Czech J. Food Sci., 2023, 41(3):155-172 | DOI: 10.17221/180/2022-CJFS


Gluten-free (GF) bakery products differ significantly from standard wheat flour products, usually with inferior characteristics. To reproduce the visco-elastic properties of wheat flour dough, GF bread is balanced by complex formulations based on gluten-free flour and starches, including hydrocolloids. They must ensure maximum similarity with conventional products to reduce the resistance of final consumers to GF products. Identifying formulations or technologies that would help mimic the gluten matrix has been and remains the focus of research in GF product design. Most research focuses on ingredients. This study provides an overview of the various technological strategies in designing GF bakery products: technologies applied to cereals, flours, dough, and final products. The study could broaden the boundaries regarding developing, selecting, and using technologies to design GF products. It would also serve as a support for further research into the development of GF products, perhaps by leveraging local products and ingredients and adapting efficient, low-cost, environmentally friendly (including combined) technologies in such a way as to obtain products with high nutritional, rheological and organoleptic value.

Dietary supplementation of natural tannin relieved intestinal injury and oxidative stress in piglets challenged with enterotoxigenic Escherichia coliOriginal Paper

Qian Zhang, Lin Zhang, Linxiao Du, Yanyan Zhang, Dan Yi, Di Zhao, Binying Ding, Yongqing Hou, Tao Wu

Czech J. Anim. Sci., 2023, 68(7):296-305 | DOI: 10.17221/148/2022-CJAS

This study is to explore the effects of natural tannin (NBT) on intestinal injury in piglets challenged with enterotoxigenic Escherichia coli (ETEC). Thirty-two 7-day-old piglets were divided into four groups: I) control group, piglets were fed a basic diet without challenge; II) ETEC group, piglets were fed a basic diet and challenged with enterotoxigenic E. coli; III) NBT + ETEC group, piglets were fed a basic diet with supplementation of 2 g/kg NBT and challenged with enterotoxigenic E. coli; and IV) ZnO + ETEC group, piglets were fed a basic diet with supplementation of 3 g/kg ZnO and challenged with enterotoxigenic E. coli. Results showed that diarrhoea rate was significantly increased in ETEC group, whereas it was decreased after NBT supplementation (P < 0.05); NBT supplementation significantly increased the average daily gain of ETEC-infected piglets. ETEC group showed damaged intestinal morphology (as indicated by decreased villus height, surface area and increased crypt depth) and barrier function (as indicated by decreased d-xylose content and increased diamine oxidase activity), induced oxidative stress (as indicated by increased myeloperoxidase activity) while supplementation of NBT had an obvious impact on the recovery of intestinal function and alleviated the oxidative damage. Further analysis showed that NBT could decrease the expression of genes related to intestinal injury (matrix metalloproteinase-3), and specifically upregulate the expression of oxidative stress-related genes (nuclear factor erythroid 2-related factor 2 and hypoxia inducible factor-1). Overall, dietary supplementation of NBT relieved intestinal injury and oxidative stress in piglets challenged with ETEC. NBT could be an alternative to ZnO as a feed additive in piglet diet.

Multi-frequency downside risk interconnectedness between soft agricultural commoditiesOriginal Paper

Dejan ®ivkov, Boris Kuzman, Jonel Subiæ

Agric. Econ. - Czech, 2023, 69(8):332-342 | DOI: 10.17221/125/2023-AGRICECON


In this article, we explore multiscale extreme risk interdependence between four soft agricultural markets – coffee, cocoa, cotton and orange juice. Wavelet correlation and cross-correlation are used to investigate this interlink, and dynamic conditional Value at Risk is used to measure extreme risk. Wavelet correlation results suggest a very weak connection between the markets in the short-term and midterm horizons, which means that investors who operate in the short term or midterm do not have to apply hedging measures against extreme risk. However, the situation is different in the long term, where relatively high correlations are found on the highest wavelet scale in all pairs, except coffee–cocoa. Complementary cross-correlation analysis indicates a lead–lag relationship between the markets. The results are mostly in line with expectations, as bigger markets lead smaller markets. Only in the cases of cocoa–cotton and cocoa–orange juice does the opposite happen.

Review on nutritional benefits of triticaleReview

Svetlana Kamanova, Yernaz Yermekov, Kamran Shah, Azigul Mulati, Xuebu Liu, Berdibek Bulashev, Dana Toimbayeva, Gulnazym Ospankulova

Czech J. Food Sci., 2023, 41(4):248-262 | DOI: 10.17221/67/2023-CJFS


Triticale (× Triticosecale Wittmack) is a hybrid cereal prepared by crossing wheat and rye. Triticale grain contains substances that have a positive effect on reducing the risk of cardiovascular disease, obesity, cancer, and type 2 diabetes, as well as increasing body's immune response and intestinal function, which warrants a need for greater attention to research on triticale crop's nutritional composition. This review covers the most recent research on the nutritional composition of triticale grain in comparison to other cereals, its role in the food industry, and its usage as a food, providing a scientific foundation for triticale's further development as a sustainable crop. Due to the wide variety of chemical compounds revealed in triticale grain, it has the potential to be utilised as a substitute cereal for various food and beverages.

Ultra-high-pressure technology for preservation of fresh aquatic foods: A reviewReview

Jiakun Peng, Chune Liu, Kaikai Bai, Shaohua Xing, Feng Liu

Czech J. Food Sci., 2023, 41(5):313-322 | DOI: 10.17221/87/2023-CJFS


Aquatic foods such as fish, shrimp, and shellfish are important human nutrient sources. However, aquatic foods spoil quickly during processing and storage due to spoilage bacteria and endogenous enzymes. Ultra-high-pressure (UHP) technology, as an advanced non-thermal treatment method, is an effective preservation technique for aquatic foods. The mechanism of UHP technology is to destroy non-covalent bonds by UHP, which leads to the change of cell membrane permeability and the destruction of high-level structure of proteins, making apoptosis and enzyme inactivation. The technology can effectively sterilise and preserve food's colour, taste and nutritional value. The paper provides an introduction to the working principles, types, sources and equipment and describes the progress of the research and application of UHP technology in pascalisation, enzyme inactivation, parasite inactivation and quality modification of aquatic products. Potential limitations and prospects of the technology are also outlined. We hope to lay the theoretical groundwork for using this technique in aquatic product processing and provide guidance for its application in industrial production.

Effect of novel carboxymethyl cellulose-based dressings on acute wound healing dynamicsOriginal Paper

A Kruzicova, M Chalupova, G Kuzminova, T Parak, J Klusakova, T Sopuch, P Suchy

Vet Med - Czech, 2023, 68(10):403-411 | DOI: 10.17221/89/2023-VETMED

The clinical implications and efficacy of newly developed modified cellulose materials were evaluated in an acute wound animal model. In the current study, sixty male rats were divided into four groups. A full-thickness circular excision wound was created in the suprascapular area. Newly developed matrices (acidic partially carboxymethylated cellulose; acidic partially carboxymethylated cellulose impregnated with a povidone-iodine solution) were applied in two test groups, while fifteen animals were used as a control group without any primary dressing. Aquacel Ag, a clinically used dressing, was selected as the reference material. To compare the efficacy in vivo, the wound size and production of selected cytokines and growth factors (TNF-α, TGF-β1, and VEGF), which play a key role in the healing process, were measured at two, seven, and fourteen days after surgery. The activity of matrix metalloproteinases 2 and 9, which actively participate in cell signalling and are essential for tissue remodelling, was determined in wound tissue by gelatin zymography. A positive effect of the newly developed dressing materials on the healing process, tissue granulation, and wound re-epithelialisation was demonstrated.


Modelling the tree height-diameter relationship of Macedonian pine (Pinus peuce Gris.) forests in North MacedoniaOriginal Paper

Vladimir Tanovski, Bratislav Matoviæ, Mihajlo Risteski, Pande Trajkov

J. For. Sci., 2023, 69(11):497-513 | DOI: 10.17221/68/2023-JFS

The most crucial individual tree variables in forest management are diameter at breast height (DBH) and height of trees (H). Projection of stand development over time relies on accurate height-diameter functions. The main aim of this paper is to define the best usable model for tree height prediction from diameter at breast height. We explore the place where the Macedonian pine was discovered in the Baba Mountain in the Pelister National Park in North Macedonia. Thus, we established 48 experimental plots (EP) with a circle shape, a radius of 12.62 m and an area of 500 m2 each. The EP were established in pure Macedonian pine stands in an elevation gradient between 950 m a.s.l. and 1 700 m a.s.l. Every tree in the EP was attributed with data for diameter at breast height, tree height, and stand characteristics data (elevation, slope, aspect, coordinate) as well. For predicting the tree height, we used 40 models from many authors which are the most usable in forest practice. Also, we prepared evaluations and tests for all models, in order to choose the best responsive model for the Macedonian pine forest. For predicting the best tree height model for Macedonian pine, we decided on Mamoun's equation, with a high correlation value of 0.85 with 73% out of the observed data. Also, this model showed a lower root mean square error of 32.65, a lower model prediction accuracy of 6.77, and a lower mean absolute percent error of 11.73%. Finally, it can be concluded that the nonlinear connection between DBH and tree height is the most responsive regression model.

Label-free proteomics to identify keratins and keratin-associated proteins and their effects on the fleece traits of Inner Mongolia Cashmere GoatsOriginal Paper

Chongyan Zhang, Yuchun Xie, Juntao Guo, Xin Su, Cun Zhao, Qing Qin, Dongliang Dai, Zhixin Wang, Jinquan Li, Zhihong Liu

Czech J. Anim. Sci., 2023, 68(1):17-29 | DOI: 10.17221/93/2022-CJAS


Inner Mongolia Cashmere Goat fleece is derived from a heterogeneous coat. The guard hair is produced by primary hair follicles, and the down hair is produced by secondary hair follicles. Reports have focused on research related to the different hair follicle types, but no related study has addressed the difference in the proteins of down hair (DH) and guard hair (GH), and whether the protein composition of these materials differs remains to be studied. The protein composition of DH and GH was studied. A total of 108 proteins were identified in DH, and 116 proteins were identified in GH; 39 proteins were differentially expressed, of which 18 proteins were upregulated and 21 proteins were downregulated in DH versus GH. In this study, through the measurement of DH and GH samples from Inner Mongolia Cashmere Goats, the diameter of DH relative to GH was downregulated (< 0.05), a property that may be related to the KRT38 protein. Moreover, the strength of GH was significantly higher than that of DH (< 0.05), a property that may be affected by the KRTAP8-1 protein. GO analysis showed that the different traits of DH and GH from Inner Mongolia Cashmere Goats are affected by keratin, actin, and calcium-binding proteins. This study uses a nonlabelled quantitative proteomics method to study the proteins in DH and GH, aiming to identify the keratin family in Inner Mongolia Cashmere Goats and to provide a new direction for studying DH and GH traits at the protein level.

Genetic diversity of some autochthonous white grape varieties from Romanian germplasm collectionsOriginal Paper

Anamaria Mirabela Ilina Dumitru, Andreea Elena Manolescu, Dorin Ioan Sumedrea, Carmen Florentina Popescu, Sina Cosmulescu

Czech J. Genet. Plant Breed., 2023, 59(2):55-66 | DOI: 10.17221/45/2022-CJGPB

We investigated the phenotypic and genetic diversity among 25 grapevine accessions of white grape maintained in a germplasm collection ex situ. The selected varieties were characterised using standardised ampelographic descriptors and microsatellite markers to obtaintheir complete description. The ampelographic analysis based on 24 OIV descriptors and the obtained first dendrogram based on common features, revealed the extent of the phenotypic diversity ranging from 0.29 (between Coarnã albã and Chardonnay) to 0.92 (between Crâmpoºie and Cioinic), without any connection with their supposed origin or the current geographic area of distribution. The SSR allelic analysis with nine standard markers proved and confirmed its high discrimination potential for genotype identification and diversity. The second cluster analysis aimed to evaluate the genetic relationships among analysed accessions,based on Dice’s similarity coefficient, revealed two groups of varieties: the first group (A) included twelve accessions with a degree of similarity between 0.37 and 0.5. The second (B) included eleven accessions, with a similarity degree between 0.33 and 0.67. The genotypic cluster analysis showed a distinct lower similarity between the Majarcã albã variety and all the varieties from the first group, and between Busuioacã de Bohotin and all the analysed varieties. The phenotypic and genetic matrices and dendrograms, although not correlated, were complimentary and provided valuable information about the diversity of the grapevine genotypes and the identification of the synonyms.

Gene effects for begomovirus resistance and plant architecture attributes in pumpkin (Cucurbita moschata Duchesne)Original Paper

Neha Verma, Karmvir Singh Garcha, Madhu Sharma, Abhishek Sharma, Ajmer Singh Dhatt

Czech J. Genet. Plant Breed., 2023, 59(2):67-75 | DOI: 10.17221/56/2022-CJGPB

Knowledge of gene actions governing begomovirus resistance and plant architectural traits is a prerequisite for a successful hybrid breeding programme. Therefore, the gene actions associated with these traits were studied in two intervarietal crosses of Cucurbita moschata (C1: Punjab Nawab × MVSR-6711 and C2: Punjab Nawab × P-135). We used the generation mean analysis of six generations for this purpose. Significant differences between the generation means were observed for all the traits in both crosses. The parental lines differed significantly in most of the studied traits. The nature and magnitude of the gene effects of seventeen traits varied by trait and cross. A simple additive dominance model was adequate for the internode number, leaf length and width, petiole length, fruit weight and cavity diameter in C1 and the number of fruits/plant in C2. The non-allelic interaction was found to be significant for a majority of the traits including the per cent disease index of the squash leaf curl China virus, tomato leaf curl New Delhi virus and their mixed infections, which indicated, that recurrent selection in biparental progeny might be useful for the accumulation of genes with additive effects. Duplicate epistasis was observed for the vine, internodal and peduncle length in C1 and the internode number, petiole and peduncle length, peduncle and fruit polar diameter in C2. This information will help to establish a breeding program for the simultaneous improvement of virus resistance and yield traits in pumpkins.

Network-based business model in the agri-food sector: A case study of Green FingersCase Study

Sagit Barel-Shaked

Agric. Econ. - Czech, 2023, 69(4):162-170 | DOI: 10.17221/2/2023-AGRICECON

Globalisation and reduced trade barriers have created a competitive business environment, requiring agri-food firms to adopt a new innovative perspective. This research study examines a network-based business model of a new venture offering services to avocado farmers and its potential impact on customer performance. A theoretical framework of a network-based business model in the agri-food sector was developed and implemented in the production of avocados. The Israeli agri-food firm, Green Fingers, was selected as the case study to analyse the value drivers of the network-based business model. The proposed business model can serve as a benchmark in evaluating other business models and developing practical strategies in the agri-food sector. The model is flexible, adaptable in meeting the evolving needs of customers and farmers, and applicable to other sectors. The model's building blocks emphasise the importance of networking and diffusing knowledge among key stakeholders, adapting to changing environments, maintaining environmental sustainability, collaborating with policymakers, and supporting farmers. The extended business model canvas may enhance the currently limited research on network-based business models in the agri-food sector from theoretical and empirical perspectives.


Comparative study on the geographical indication protection between China and the European Union – From the perspective of the China-EU Geographical Indications AgreementOriginal Paper

Weiwen Qian, Yinguo Dong

Agric. Econ. - Czech, 2023, 69(5):185-201 | DOI: 10.17221/98/2023-AGRICECON

Geographical indication (GI) represents the specific good quality and reputation of the regional characteristics of agricultural products, which is a positive approach for stabilising the export of agricultural products, realising high quality and high prices for agricultural products and rural revitalisation. Based on the China-EU Geographical Indications Agreement, this paper discusses the differences between China and the European Union (EU) in terms of GI protection from three aspects: the institutional framework, the operational system, and the operational status of GIs. The purpose of the study is to identify the differences between China and the EU in the protection of GIs, China's shortcomings, and gaps, and to propose policy recommendations for China to protect GI products better, exploit the economic impact of GIs and enhance the competitiveness of China's exports.

Sap flow modelling based on global radiation and canopy parameters derived from a digital surface modelOriginal Paper

Tomá¹ Mikita, Zdenìk Patoèka, Elizaveta Avoiani

J. For. Sci., 2023, 69(8):348-359 | DOI: 10.17221/191/2022-JFS

Sap flow represents water transport from roots to leaves through the xylem and is used to describe tree transpiration. This paper proposed and tested a procedure to estimate sap flow by calculating global radiation in a digital model of the tree canopy surface obtained by unmanned aerial vehicle imaging. The sap flow of nine trees was continuously measured in the field. In the digital surface model, individual canopies were automatically delineated, their parameters were determined and the global radiation incident on their surface on specific days was calculated. A polynomial relationship was found between sap flow and the calculated incident solar radiation during the morning hours with a coefficient of determination of 0.98, as well as a linear relationship between the decrease in radiation and sap flow during the afternoon with a correlation coefficient of 0.99. Using the Random Forest machine learning method, a model predicting the sap flow of the trees was created based on the global radiation and canopy parameters determined from the digital surface model of tree canopies. The resulting model was deployed on additional days and compared to field measurements of sap flow, achieving a correlation coefficient of 0.918. In addition, two linear regression models were created for a tree group, achieving coefficients of determination of 0.66 and 0.90.

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.

Development and evaluation of an electromagnetic device to improve the physiological properties of some crop seedsOriginal Paper

Ahmed Shawky El-Sayed

Res. Agr. Eng., 2023, 69(4):167-178 | DOI: 10.17221/108/2022-RAE

This research aims to develop an eco-friendly technique for treating seeds before sowing and improving their physiological features. The developed technique depends on utilizing synchronized electro-magnetization and microwave radiation. An electromagnetic device was evaluated to provide multiple treatment ranges. The treatments are regulated electronically according to the seeds' physiological properties and storage duration. The device was designed to accommodate small and medium seeds for a variety of strategic crops, including wheat, barley, etc. Three different treated wheat varieties were tested and compared to the control. Also, eight different levels of synchronized electro-magnetization and microwave radiation were tested. The treated wheat seeds' vegetative properties, such as germination percentage, germination rate index, germination speed coefficient, and vigour indexes, were highly significant compared to the control. The treated wheat seeds' physiological properties were highly significant. The device productivity ranged from 0.023 to 0.059 Mg·h–1 with minimum energy consumption rates of 0.396 to 0.018 kWh·Mg–1, while the operating costs decreased to 11.53–44.13 USD·Mg–1.

Polymorphism of Bolivian accessions of Arachis hypogaea L. revealed by allergen coding DNA markersOriginal Paper

Jana ®iarovská, Lucia Urbanová, Julio Montero-Torres, Adam Kováèik, Lucia Klongová, Rohit Bharati, Sandra Romero-Ortega, Eloy Fernández-Cusimamani, Olga Leuner

Plant Soil Environ., 2023, 69(12):615-627 | DOI: 10.17221/306/2023-PSE

Arachis hypogaea L. is an annual legume that is one of the most consumed plant species. On the other hand, it belongs to one of the most monitored clinically important allergens worldwide. The polymorphism of this species based on allergen coding genes could be useful in its characterisation, but previously, no allergen-based marker techniques have been developed for peanuts. A new type of DNA-based markers of coding regions were used to analyse the variability of 21 peanut accessions – BBAP (Bet v1 based amplicon polymorphism), PBAP (profilin based amplicon polymorphism), and VBAP (vicilin based amplicon polymorphism). All of the used technique provided polymorphic fingerprints and distinguished the analysed peanut accessions. The effectivity of these techniques corresponds to the presence of the allergen homologous sequences that are a part of the A. hypogaea genome. VBAP was the most effective in distinguishing the analysed peanut accessions when compared to the results of BBAP and PBAB. For BBAP, two of the analysed accessions provided the same fingerprinting pattern. The ability of the used markers to detect polymorphisms was comparable, with an average polymorphism information content (PIC) value of 0.47.

Nutritional composition analysis and quality evaluation of cattle in different regions of Guizhou Province (China)Original Paper

HaoXiang Xu, WenJu Luo, Lu Lei, JiuLing Long, Bo Yu, YuanFeng Zhao, Rong Ai, Jiang Lingling, Jiang Ran, JingRui Zhou (email: 296655827@qq.co

Czech J. Food Sci., 2023, 41(6):455-472 | DOI: 10.17221/133/2023-CJFS

This study aimed to investigate the variations in nutritional composition among different breeds of cattle in Guizhou. Specifically, this study selected Guanling, Weining, Sinan, Wuchuan, and Simmental cattle as experimental subjects. Assessing the nutritional quality of the longissimus dorsi muscle involves evaluating various parameters, including ultimate pH (pHu), meat colour, water-holding capacity, shear force, protein and fat content, levels of organic acids and amino acid composition. The study's findings indicated notable variations among the muscles of different cattle breeds tested. Guanling, Wuchuan, and Simmental cattle exhibited the highest water-holding capacity, while Wuchuan cattle displayed the highest shear forces. Guanling cattle and Simmental cattle had the highest levels of protein and fat. Weining cattle and Simmental cattle demonstrated the highest concentrations of lactic acid and oxalic acid. Guanling cattle exhibited the highest total amino acid and essential amino acid content. Moreover, Guanling cattle and Weining cattle showed the highest lightness (L*) and yellowness (b*) values, indicating lighter meat colour, while Weining cattle had the highest redness (a*) value, indicating redder meat colour. No significant differences among the five cattle breeds were observed in pHu and propionic acid content. These results provide a theoretical basis and serve as a data reference for assessing the suitability of different beef varieties for various processing purposes.

The beneficial role of arbuscular mycorrhizal fungi on population rates of aboveground herbivory: Zyginella pulchra (Hemiptera, Cicadellidae) in plane treesOriginal Paper

Hamed Aalipour, Ali Nikbakht, Jahangir Khajehali, Mohammad Taghizadeh

J. For. Sci., 2023, 69(6):244-253 | DOI: 10.17221/158/2022-JFS


Herbivorous pests and arbuscular mycorrhizal fungi (AMF) coexist on the same host plant, having an indirect effect on one another. We established an experiment in a randomised complete block design with four treatments and six replications to examine the impact of AMF on the population and the damage caused to plane trees by the leafhopper Zyginella pulchra. Manure, manure plus fertiliser, manure plus fertiliser plus AMF, and non-inoculated plants (control) were all of the treatments. The findings revealed that while the nutritional content and soluble carbohydrate content were significantly enhanced by all treatments, they largely reached their peak in the AMF-inoculated plants. When compared to control trees that were not inoculated, the concentrations of N, P, and Zn were boosted by 39%, 81%, and 425%, respectively. AMF inoculation increased the population of Z. pulchra nymphs and adults compared to the control. However, the plants with AMF inoculation eventually suffered greater leaf loss as a result of this rise in the pest population. The findings show that while AMF enhance nutrient absorption and are necessary to improve the nutritional state of the host trees, they also enhance the absorption of pests that are thought to be harmful to plane trees. However, AMF colonisation improved the potential attractiveness of Z. pulchra to plane trees.

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