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The importance of agriculture and rural areas for the future in the European Union: An exploration of public opinionOriginal PaperMercedes Rodríguez, José Antonio CamachoAgric. Econ. - Czech, 2023, 69(10):394-403 | DOI: 10.17221/115/2023-AGRICECON
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Characterisation of iodo- plus mesosulfuron resistance in an Alopecurus myosuroides Huds. Population from the Czech RepublicOriginal PaperKateřina Hamouzová, Jakub Mikulka, Jaromír Šuk, Madhab Kumar Sen, Pavlína Košnarová, Soham Bhattacharya, Josef SoukupPlant Soil Environ., 2023, 69(12):608-614 | DOI: 10.17221/377/2023-PSE The intensification of Alopecurus myosuroides Huds. (black-grass) is becoming a major problem due to its growing resistance to a broad spectrum of acetolactate synthase (ALS)-inhibiting herbicides. Hence, the present study was conducted to evaluate the resistance level of a black-grass population to iodosulfuron plus mesosulfuron and to identify the underlying resistance mechanism. Dose-response studies revealed that the resistance population is 22 times less sensitive to iodosulfuron plus mesosulfuron than the susceptible population. The probable resistance mechanism identified was the target-site substitution of proline (Pro) by threonine (Thr) at the 197th position of the ALS enzyme. Furthermore, whole plant response bioassay experiments demonstrated that this population is also resistant to pinoxaden, chlorotoluron, diflufenican plus pendimethalin plus chlorotoluron, fenoxaprop and flufenacet plus diflufenican. In summary, the current findings recommend using alternative herbicides in integrated weed management to interrupt the possible evolution of herbicide resistance in these species. |
Determination of some heavy metals in different wheat flour brands in Sulaimani, Kurdistan Region – IraqOriginal PaperMuhammad Faruq Wahab, Dara Muhamed JamilCzech 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. |
Endophytic fungi of hazelnut (Corylus avellana)ReviewRosario Nicoletti, Beata ZimowskaPlant Protect. Sci., 2023, 59(2):107-123 | DOI: 10.17221/133/2022-PPS Results of a vast research activity carried out worldwide in the last decades have demonstrated that endophytic fungi hold a fundamental role in improving plant fitness based on their aptitudes as growth promoters and/or defensive mutualists. These properties may have applicative perspectives in crop production, particularly for tree species such as hazelnut (Corylus avellana), which is mostly cropped extensively in semi-natural contexts of highland regions throughout the temperate zones. The available data on the occurrence, ecological roles, and applications in biotechnology of endophytic fungi associated with hazelnuts are revised in this paper in view to provide a reference supporting future investigations and projects aimed at exploiting the potential of this component of the plant microbiome. |
Organic fertilization induces changes in soil nitrogen mineralization and enzyme activitiesOriginal PaperMaría Rosa Yagüe, Carmen Lobo, Pilar GarcíaPlant Soil Environ., 2023, 69(1):38-43 | DOI: 10.17221/274/2022-PSE In this study, we addressed the reuse of two organic waste products as fertilisers. To this end, soil fertilised with the spent mushroom substrate (SMS) or with an anaerobic digestate (DIG) was subjected to an incubation assay, and the results were compared with those from soil treated with a mineral fertiliser (MIN) and an unfertilised soil (CO). The soil was sampled after fertilisation and after 90 days of aerobic incubation. Nitrogen (N) mineralisation (NH4+ and NO3–) and oxidable carbon (OC) were determined. The impact of the treatments on the soil was evaluated by measuring the enzymatic activity of arylsulfatase (ARYL), ß-galactosidase (GAL), and urease (URE). The highest OC content was observed in the SMS treatment. After 90 days of incubation, the SMS treatment showed a lower mineral N content than the CO treatment. This finding was associated with N immobilisation. However, mineral N significantly increased ARYL activity in the DIG and MIN treatments, and URE activity was always higher at both sampling times in the SMS treatment. Initially, GAL activity was notably high in the DIG treatment but decreased after incubation, reaching similar values to those registered in the CO treatment. Organic fertilisation treatments induced different effects on soil N mineralisation, showing changes in the activity of the enzymes analysed. |
Support for silver fir (Abies alba Mill.) in managed forestsEditorialJiří Novák, Dušan KacálekJ. For. Sci., 2023, 69(2):41-43 |
Continuous versus intermittent enteral nutrition in hospitalised dogs and cats using a new scoring system: A prospective clinical studyOriginal PaperA Rado-Blozonova, L Rauserova-Lexmaulova, L Cerna, M Pavlik, M Rado, M FusekVet Med - Czech, 2023, 68(6):246-252 | DOI: 10.17221/26/2023-VETMED Nutrition is an important part of the critical care. The goals of this prospective clinical study were to create a scoring system for the assessment of patient nutritional status and to compare continuous and intermittent bolus feeding of enteral nutrition (EN). A total of 38 patients (21 dogs and 17 cats) were divided into Group C (continuous feeding; 23 patients) and Group I (intermittent feeding; 15 patients). The following variables were recorded for each patient in both groups: gastrointestinal (GI) complications, changes in body weight (BW), body condition score (BCS), muscle condition score (MCS), veterinary nutritional status score (VetNSS), length of hospitalisation and outcome. The normality of the data was assessed using the Shapiro-Wilk test. Fisher’s exact test, Mann-Whitney, Wilcoxon signed-rank tests, and the t-test were used in statistical analyses. Significant changes were found in VetNSS and BW between the 1st and 5th day in Group C. The VetNSS seems to be useful for monitoring the nutritional status of hospitalised patients. Anorectic dogs and cats can be successfully supported with either continuous or intermittent feeding methods with a similar risk of GI complications and outcomes. |
Impacts and mechanisms of biochar on soil microorganismsReviewKai Huang, Jun Zhang, Guangming Tang, Da Bao, Tangyu Wang, Deping KongPlant Soil Environ., 2023, 69(2):45-54 | DOI: 10.17221/348/2022-PSE Biochar is a carbonaceous material derived from the pyrolysis of carbon-rich biomass that has attracted increasing research and attention because of its ability to enhance soil carbon storage, increase soil fertility, fix and transform pollutants in soil, and improve the soil environment. These enhancements directly or indirectly affect soil microorganisms’ metabolic activities and community structure. This paper reviews the effects of biochar on soil physicochemical properties, enzyme activities, nutrients, contaminants, and related microbial activities. In addition, this work summarises the possible mechanisms involved in the interaction between biochar and microorganisms and the potential hazards associated with biochar use. Finally, this study aims to provide a theoretical basis for future related research. |
Malignant ovarian dysgerminoma in a 16-year-old leopard gecko (Eublepharis macularius)Case ReportH Zborilova, J Dietz, KO Heckers, R Dvorakova, Z Knotek, E CermakovaVet Med - Czech, 2023, 68(3):129-134 | DOI: 10.17221/107/2022-VETMED The 16-year-old female leopard gecko (Eublepharis macularius) was presented with distended coelom and cachexia. Examination of the faecal sample ruled out the presence of protozoan parasites. A radiographic examination confirmed the presence of radiopaque foreign material in the intestine. The conservative treatment with tramadol, butylscopolamine, famotidine, vitamin B complex, and supportive fluid therapy with Hartmann solution and Duphalyte, was performed for 14 days. Ultrasonographic examination revealed the presence of a large mass adherent to the liver (with hypoechoic regions), a thin-walled cystic structure close to the liver, and coelomic effusion. Surgical exploration revealed a large mass on the right ovary. The unilateral (right) ovariectomy was performed. Histologic examination of the mass revealed dysgerminoma with an invasion of the ovarian bursa and blood vessels. Nine months after the surgery the patient was active and doing well. In reptiles, dysgerminoma is an uncommon type of neoplasia. To the best of our knowledge, this is the first case of dysgerminoma tumour diagnosed intravitally and treated successfully in lizards. |
Recent advances of using organic acids and essential oils as in-feed antibiotic alternative in poultry feedsReviewNguyen Hoang QuiCzech J. Anim. Sci., 2023, 68(4):141-160 | DOI: 10.17221/99/2022-CJAS
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Improving the extraction efficiency and functional properties of wheat germ protein by ultrasound-assistedOriginal PaperChunyan Xie, Juan Du, Chunmiao Xing, Xu Zhang, Lan Wang, Hongzhang Chen, Tong LinCzech J. Food Sci., 2023, 41(2):118-126 | DOI: 10.17221/54/2022-CJFS his study optimised the conditions for ultrasound-assisted extraction (UAE) of defatted wheat germ protein (WGP) and evaluated its effect on the functional properties. Single-factor and orthogonal experiment designs were combined to optimise the UAE extraction condition. The extraction of WGP reached the highest level, at 88.66%, with a solid : liquid ratio of 1 : 25 g·mL–1, pH value of 9.0, ultrasonic time of 10 min, and ultrasonic power at 400 W. Under these conditions, albumin, globulin, prolamin, and glutenin accounted for 32.26, 28.52, 5.42, and 22.40% of total protein, respectively. In addition, this study compared the functional properties of WGP extracted by UAE with the results based on a commercially available soy protein (SP) isolate (SPI). The UAE of WGP had better oil absorption, foaming, and emulsifying properties. Therefore, UAE is a promising technique for food protein extraction because it can change the protein efficiencies and properties of the extract. |
Exploring the motivations behind food self-provisioning in the Czech RepublicOriginal PaperTereza Pilařová, Steffen Muench, Miroslava Bavorova, Jan HumlAgric. Econ. - Czech, 2023, 69(6):234-245 | DOI: 10.17221/117/2023-AGRICECON
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Dynamics of occurrence of defective eggs in initial laying lines of hensOriginal PaperTomáš Kopec, Ladislav Máchal, Eva Tůmová, Zuzana Rečková, Radek FilipčíkCzech J. Anim. Sci., 2023, 68(8):356-363 | DOI: 10.17221/54/2023-CJAS The aim of this study was to monitor the occurrence of abnormal eggs in five initial laying lines of the domestic chicken (Gallus domesticus) between 2017 and 2021. The incidence of abnormal eggs, cracks, shell-less eggs, and double-yolk eggs were examined as part of the monitoring. Also assessed was the laying intensity, which ranged from 83.7% for the Barred Plymouth Rock (BPR) B line to 96.8% for the Rhode Island Red (RIR) A line. A statistically significant relationship between the line and control year was discovered for all varieties of abnormal eggs. The highest occurrence of cracks was in the RIR B line (2.2%). The BPR A line of hens had the highest concentration of shell-less eggs (1.7%), while the RIR A line, which also had the highest laying intensity (96.8%), had the highest frequency of double-yolk eggs (1.5%). A positive trend between the intensity and the occurrence of abnormal eggs was also confirmed. The BPR B (3.4%) and BPR C (3.0%) lines, which belonged to the lines with the lowest laying intensity, had the lowest percentage of abnormal eggs. For the BPR C line, cracks (1.2%), shell-less eggs (0.9%), and double-yolk eggs (0.9%) had the lowest occurrence rates. The correlation between laying intensity and double-yolk eggs reached 0.67, and a significant positive relationship was seen. On the other hand, no association was found between the laying intensity and the prevalence of cracked or shell-less eggs. There was also a strong correlation between abnormal eggs and double-yolk eggs (0.80) and between abnormal eggs and cracks (0.73). The correlation between the total occurrence of abnormal eggs and the intensity of laying reaches a mean value of 0.41. An increase in the intensity of laying from 80% to almost 100% leads to an increase in the occurrence of abnormal eggs from 2.6% to 6.3%. |
Extraction and enzymatic modification of dietary fibre from purple aubergineOriginal PaperSuwalee Fong-in, Kamonlak Wicharaew, Pattaramon Phalapan, Trakul PrommajakCzech J. Food Sci., 2023, 41(4):304-312 | DOI: 10.17221/84/2023-CJFS This research scrutinised the opportunity of upcycling waste from the food industry by extracting dietary fibre from purple aubergine. One of the challenges addressed was enzymatic browning, which negatively influenced the quality of the fibre extracted from fresh aubergine. Various pre-treatment procedures were assessed, including using citric acid, sulphite immersion, peeling and thermal processing, to determine their effects on extraction yield, colour, and the functionality of the resultant dietary fibre. Findings indicated that a pre-treatment method involving aubergine peeling, sulphite solution immersion, and subsequent steaming before extraction produced optimal results, enhancing both whiteness index and water-holding capacity. Experiments were conducted with traditional enzymes supplemented with cellulase, xylanase, and lipase for enzymatic extraction. The addition of lipase notably elevated the extraction yield and water-holding capacity, albeit with an undesired darkening effect on the dietary fibre. In contrast, the application of xylanase emerged as the most effective treatment, delivering the highest overall quality for the derived dietary fibre. |
Retrospective study using biosensor data of a milking Holstein cow with jejunal haemorrhage syndromeCase ReportS Ha, S Kang, M Jung, E Jeon, S Hwang, J Lee, J Kim, YC Bae, J Park, UH KimVet Med - Czech, 2023, 68(9):375-383 | DOI: 10.17221/73/2023-VETMED Jejunal haemorrhage syndrome (JHS) is a sporadic and fatal enterotoxaemic disease in dairy cows associated with acute development and poor prognosis despite treatment. A 5-year-old Holstein cow with no reported pregnancy, three calving numbers, and 303 days in milk presented with hypothermia, discomfort, and inappetence. Anaemia, dehydration, faeces with blood clots, and absence of rumen and bowel movements were observed. We identified the presence of neutrophilia, hyperglycaemia, hypoproteinaemia, azotaemia, hyperlactatemia, hypocalcaemia, hypermagnesemia, hypokalaemia, and hypochloraemia through blood analyses. Necropsy and histopathologic examination revealed a dilated bluish-purple jejunum, blood clots within the jejunum, neutrophil infiltration into the submucosa of the jejunum, and vascular necrosis. Retrospective examination revealed extraordinary patterns of rumination time, activity, rumen mobility, and rumen temperature using biosensors and decreased milk yield. The abnormalities in the affected cow were detected before recognition by farm workers. To the best of our knowledge, this is the first report to examine data from biosensors in a cow with JHS. Our findings suggest that using biometric data may help understand the development of JHS. |
Progression of wheat Tan spot under different bioclimatic stages and agricultural practicesOriginal PaperSalma Tissaoui, Noura Omri-Benyoussef, Hatem Chaar, Marwa Hassine, Jean-stephane Venisse, Bouzid Nasraoui, Amira Mougou-HamdanePlant Protect. Sci., 2023, 59(3):233-244 | DOI: 10.17221/103/2022-PPS Tan spot, caused by Pyrenophora tritici-repentis, is a severe worldwide wheat foliar disease and has become common in Tunisia. Two hundred wheat field surveys were conducted in northern Tunisia during the 2017–2019 seasons to determine disease intensity and the correlation of the tan spot with agricultural practices and environmental factors. The disease infested 67% of the visited regions. The highest prevalence (87.5%), incidence (> 30%), and severity (> 10%) were observed in sub-humid regions, contrary to the middle semi-arid regions. Logistic regression was used to analyse the correlation of incidence and severity with various factors as independent variables. In a multiple variable model, the bioclimatic stages, variety, previous crop, humidity, and rainfall were significantly associated with tan spot incidence and severity. High incidence and severity were significantly correlated to the sub-humid regions, varieties Maâli, Razzak, Karim, and Carioca, rainfall, high level of humidity, and monoculture. The correlation between the tan spot and several environmental factors must be considered to ensure successful and sustainable disease management strategies. |
Physical, mechanical, and antioxidant properties of alginate/pectin edible films with incorporated chokeberry and wild thyme extractsOriginal PaperSvetla Maksimova Dyankova*, Ayten Osman SolakCzech J. Food Sci., 2023, 41(5):367-374 | DOI: 10.17221/94/2023-CJFS
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Integrated effect of residue management and drip irrigation on crop growth and water productivity of direct seeded riceOriginal PaperKanwar Barjinder Singh, Gurpreet Singh, Rajeev Kumar Gupta, Ahmed A. Al-Othman, Abed Alataway, Ahmed Z. Dewidar, Mohamed M. MattarPlant Soil Environ., 2023, 69(11):554-565 | DOI: 10.17221/105/2023-PSE Crop residue management and water saving are the two major issues for the sustainability of the rice-wheat cropping system. Therefore, a two-year field experiment was conducted in a split-plot design to study the combined effect of three rice residues (residue incorporation (RI), residue standing (RS) and residue removal (RR) and two wheat residue incorporation (WI) and residue removal (WR) management in main plots and two irrigation regimes, i.e., flood (F) and surface drip (SD) in subplots on the growth and water productivity of direct seeded rice (DSR). During both years, RI-WI resulted in significantly higher plant height (PH), leaf area index (LAI) and dry matter accumulation (DMA) than in other residue management treatments. Drip irrigation significantly increased PH, LAI, DMA grain yield, straw, and biological yield, along with a 9.6% irrigation water savings over flood irrigation. During both years, grain yield, straw and biological yield of DSR were significantly higher in RI-WI than in RR-WR and RR-WI. RI-WI had significantly greater apparent water productivity (AWP) and actual water productivity (RWP) of DSR. Drip irrigation had significantly higher AWP and RWP during both years than flood irrigation except RWP during 2017. Transpiration efficiency (TE) in rice residue incorporation was significantly higher than in rice residue standing and removal. During both years, the TE of drip irrigation was also significantly higher than flood irrigation. So, incorporating rice and wheat residues along with drip irrigation improves crop growth and water productivity. |
Design and construction of coffee roasting machine with rounding cylinder tube using electric heat sourceOriginal PaperAndriani Lubis, Syafriandi Syafriandi, Muhammad Idkham, Ari MaulanaRes. Agr. Eng., 2023, 69(3):118-123 | DOI: 10.17221/69/2022-RAE
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Experimental evaluation of milk yield and selected traits of milk quality in Clun Forest ewesOriginal PaperJan Kuchtík, Květoslava Šustová, Tomáš Kopec, Ferenc Pajor, Leona KonečnáCzech J. Anim. Sci., 2023, 68(7):306-312 | DOI: 10.17221/221/2022-CJAS
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Change in β-glucosidase activity in root zone of ferns under toxic elements soil contaminationOriginal PaperMilan Novák, Veronika Zemanová, Milan Pavlík, Simona Procházková, Daniela PavlíkováPlant Soil Environ., 2023, 69(3):124-130 | DOI: 10.17221/448/2022-PSE The influence of toxic elements, such as arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn), in the root zone of As-hyperaccumulator Pteris cretica 'Albo-lineata' and non-As-hyperaccumulator P. straminea, on the enzymatic activity of β-glucosidase, dissolved organic carbon (C) in soil, toxic element accumulation in fern roots, and root biomass were evaluated in a pot experiment. Ferns were cultivated in soils from the locality of Suchdol (control) and Litavka (high contamination) for six months. For all toxic elements, an increasing trend in their contents in the roots was observed with soil contamination for both ferns. Differences between ferns were observed in As and Zn accumulation. Pteris cretica had a significantly higher As accumulation than P. straminea. Zinc accumulation in the roots showed an opposite trend. A significant difference between ferns was confirmed in the dissolved organic C content. Our results showed a significantly higher content of dissolved organic C in the P. straminea root zone than in P. cretica. The significant effect of toxic elements in the soil on β-glucosidase activity was observed. Toxic elements inhibited β-glucosidase activity in the root zone of P. cretica, and an increase in P. straminea was determined in the Litavka soil. The results suggest a higher sensitivity of P. straminea to toxic element contamination in soil, leading to increased β-glucosidase activity and increased dissolved organic C content. |
Efficacy of the intranasal application of azaperone for sedation in weaned pigletsOriginal PaperM Svoboda, J Blahova, J Jarkovsky, A Zacharda, S Hajkova, J Vanhara, J VasekVet Med - Czech, 2023, 68(4):145-151 | DOI: 10.17221/21/2023-VETMED
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Influence of Paulownia fortunei (Seem.) Hemsl. roots on preferential flow in the red soil hilly regionOriginal PaperZhuo Tian, Shuaipu Zhang, Qinxue Xu, Mingfeng Bi, Jianhua HeSoil & Water Res., 2023, 18(2):89-101 | DOI: 10.17221/140/2022-SWR Preferential water flow in soil significantly affects runoff, water infiltration, storage, groundwater environment, and soil stability. Plant roots positively affect preferential flow development. This study explored the relationship between the root system of Paulownia fortunei (Seem.) Hemsl. and preferential flow using dyeing tracer test and image analysis techniques. A typical red soil hilly region on the outskirts of Guilin City (Guangxi, China) was selected as the study area. A Bright Blue solution was used to visualize the pathways followed by the infiltrated water in simulated rainfall experiments, and Image Analyzer of Plants was used to analyze the root length, surface area, and volume. The results revealed significant differences in the root surface area density of coarse roots (RSAD-CR) and length index of preferential flow (LI) among soil profiles at various distances from the tree trunk. The root volume density of coarse (RVD-CR) and total roots (RVD-TR), the root length density of coarse roots (RLD-CR), and RSAD-CR were significantly correlated with the characteristics of dyeing morphology. Conversely, the root length density and root surface area density of fine (RLD-FR and RSAD-FR, respectively) and total roots (RLD-TR and RSAD-TR, respectively), and the root volume density of fine roots (RVD-FR) were not significantly correlated with the characteristic parameters of dyeing morphology. The root systems of P. fortunei were critical for enhancing soil water infiltration and developing preferential flow in red soil hilly regions. Coarse roots had a greater impact on the development of preferential flow than fine roots, and root volume had a greater influence on preferential flow development than root length and root surface area. This study contributes to a better understanding of the hydrological cycle at the plant-soil interface in red soil hilly regions. |
Assessment of heavy metals in soil, oilseed rape (Brassica napus L.) and honeyOriginal PaperAtanas Atanasov, Ivaylo Hristakov, Gergana Kuncheva, Milan Koszel, Veselin DochevPlant 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. |
Geopolitical deadlock and phosphate shortfall behind the price hike? Evidence from Moroccan commodity marketsOriginal PaperMarek Vochozka, Svatopluk Janek, Lenka ŠiráňováAgric. Econ. - Czech, 2023, 69(8):301-308 | DOI: 10.17221/140/2023-AGRICECON
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Evaluation of crystallisation structures of cervical mucus in Zwartbles sheep with previous oestrus synchronisationOriginal PaperVojtěch Pešan, Zuzana Rečková, Martin Hošek, Radek Filipčík, Katarina Soušková, Tomáš Kopec, Martina Pešanová TesařováCzech J. Anim. Sci., 2023, 68(9):383-390 | DOI: 10.17221/4/2023-CJAS This study was conducted to determine the individual types of crystallisation structures of cervical mucus (arborisation phenomenon) in sheep and changes in the types of these structures during oestrus. A total of 80 ewes aged between two and eight years were included in the study. Oestrus synchronisation was performed using intravaginal sponges, and samples of cervical mucus were collected 55–57 h after the removal of intravaginal sponges and subsequently evaluated. The crystallisation structures of the cervical mucus of sheep exhibit the same sequence during oestrus as in cattle. The most frequently occurring types of crystallisation in the observed sheep included twig-shaped (33.33%), twig-shaped-clubmosses (24.00%) and clubmosses (14.67%). The least common type was fern frond crystallisation (1.33%). A statistically significant difference was found between the representation of individual types of crystallisation (P < 0.01). As with cattle, it is possible to use the evaluation of the crystallisation of cervical mucus to determine the optimum time for insemination, especially in groups of animals with previous synchronisation/induction of oestrus. Establishing the correct time for insemination or natural mating with a ram makes it possible to optimise breeding management and improve pregnancy rates, which are crucial in breeding these seasonally polyoestrous animals. Based on the results, it can be stated that insemination should take place 57+ h after the removal of intravaginal sponges and the application of hormonal treatments for oestrus induction and synchronisation (equine chorionic gonadotropin). |
Postharvest application of boric acid on grapes to improve the shelf-life and maintain the qualityOriginal PaperHui-Jie Li, Da-Long Guo, Jia-Bing Jiao, Yi-Man Fang, Yang-Yang ZhangHort. Sci. (Prague), 2023, 50(3):199-207 | DOI: 10.17221/73/2022-HORTSCI Boric acid (BA) is commercially acceptable and economically feasible material to enhance the shelf life of pears, oranges and other horticultural plants. Here, we investigated the effect of BA on the shelf life and post-harvest quality of table grapes (cv. ‘Kyoho’). The grapes were immersed in a BA solution with different concentrations [0 (as the control), 10, 30, 50 mM] for 10 min and stored at 25 ± 1 °C for 10 days. Compared to the control, the BA treatments maintained higher berry firmness by inhibiting the activity of polygalacturonase (PG) and cellulase. In addition, the BA-treated grapes maintained higher antioxidant enzyme activities, such as catalase (CAT) and superoxide dismutase (SOD), and lower metabolic toxic products, like the superoxide anion (O2-) production rate, malondialdehyde (MDA) and hydrogen peroxide (H2O2) content than the control. The experimental results showed that the post-harvest application of BA effectively delays the senescence of grapes compared with the control, and the 10 mM BA treatment had the most obvious effect. |
Lipid-rich bovine serum albumin is beneficial for the early development of bovine embryos, but induces lipid droplet formation in the blastocystOriginal PaperDae-Jin Kwon, Kyung-Do Park, HakKyo Lee, Jae-Don OhCzech J. Anim. Sci., 2023, 68(11):443-450 | DOI: 10.17221/107/2023-CJAS Lipid-rich bovine serum albumin (LR-BSA) has been reported to increase the survival rate of blastocysts after freezing and thawing. However studies on the early development of in vitro fertilised (IVF) embryos are still insufficient in cattle. This study investigated the blastocyst productivity of in vitro culture (IVC) medium (synthetic oviductal fluid medium with amino acids, mSOFaa) supplemented with 5% fetal bovine serum (FBS, Control) or LR-BSA (1, 2.5, 5 mg/ml dosages, respectively) and the qualitative characteristics of produced blastocysts. Cleavage rates on day 2 were similar between all groups. Significant differences were obtained in the blastocyst rate in the 2.5LR-BSA group compared with the control (23.5% vs 35.7%, P < 0.05). Hatching rates were significantly higher in all treatment groups than in control (P < 0.05). The cell number in blastocysts did not differ among groups, but the apoptotic index in the 5.0LR-BSA group was higher than the control (P < 0.05). The expression of embryo quality-related markers was affected. Octamer-binding transcription factor 4 (Oct4), placenta associated 8 (Plac8), and sex-determining region Y-box 2 (Sox2) genes expression in the 2.5LR-BSA group were significantly up-regulated compared to the control (P < 0.05). Cytoplasmic lipid contents and the lipid droplet formation-related gene, sterol regulatory element binding transcription factor 1 (Srebf1), were significantly increased in the 5.0LR-BSA group (P < 0.05). Therefore, the LR-BSA supplementation (2.5 mg/ml) to mSOFaa medium could contribute to the early development of bovine IVF embryos and the qualitative improvement of the resulting blastocysts. |
How to reduce the extreme risk of losses in corn and soybean markets? Construction of a portfolio with European stock indicesOriginal PaperDejan Živkov, Biljana Stankov, Nataša Papić-Blagojević, Jelena Damnjanović, Željko RačićAgric. Econ. - Czech, 2023, 69(3):109-118 | DOI: 10.17221/371/2022-AGRICECON
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Characterisation of the HbSnRK2 gene family members and revealing specific HbSnRK2.2 functions in the stress resistance of the rubber treeOriginal PaperYu Zhang, Mingyang Liu, Dong Zhang, Meng Wang, Lifeng WangPlant Protect. Sci., 2023, 59(1):59-72 | DOI: 10.17221/48/2022-PPS SNF1-related protein kinase (SnRK2) is a critical positive regulatory factor in the abscisic acid (ABA) signalling pathway. However, the roles of the HbSnRK2 gene family members in the rubber tree, especially in response to stress, have not been thoroughly characterised. Here, we cloned six HbSnRK2 genes from the rubber tree. Based on the phylogenetic analysis, the HbSnRK2 family genes were divided into three groups. The motifs and intron numbers of HbSnRK2 were conserved. Analysis of cis-regulatory element sequences of all HbSnRK2 genes identified ABRE and TC-rich elements in the prompter of all the HbSnRK2 genes, illustrating that HbSnRK2 could be adjusted by the ABA and stress responsiveness. The qRT-PCR analysis showed that the expression patterns of the six HbSnRK2 genes differed in different tissues. The expression of these genes also differed under treatment with the plant hormone ABA, the HbSnRK2.2 gene was especially significantly expressed under the ABA treatment. Moreover, the HbSnRK2.2 gene responded to glyphosate, powdery mildew, heat stress and cold stress processes, which indicates that the HbSnRK2.2 gene plays an important role in phytohormone signalling and stress response in rubber trees. Taken together, the study provides valuable information to further define the role of the HbSnRK2 gene in rubber trees. |
