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Results 61 to 90 of 1934:

Development of a hybrid apple population: MAS-based testing for Vf gene detection and preliminary field evaluation of its scab resistanceOriginal Paper

Georgeta Maria Guzu, Ioan Zagrai, Claudiu Moldovan, Smaranda Doina Roșu-Mareș, Luminița Antonela Zagrai, Anca Maria Chiorean, Mirela Irina Cordea

Hort. Sci. (Prague), 2026, 53(1):59-69 | DOI: 10.17221/196/2024-HORTSCI

The apple scab, caused by Venturia inaequalis, is one of the most devastating diseases of apples because it drastically affects the aerial parts of the tree. Apple breeding programs frequently aim to develop cultivars exhibiting resistance to scab. Thus, controlled pollinations were performed on apple trees in 2021. The experiment was organised into a hybridisation scheme involving six apple cultivars. The scheme consists of: five female genitors (‘Auriu de Bistrița’, ‘Jonathan’, ‘Golden Delicious’, ‘Starkrimson’, and ‘Idared’) and one male genitor (‘Florina’ – donor for the Vf). To quickly identify the Vf gene in the early development stage of progenies, three pairs of primers were used: AM19, AL07, and VFC. The hybrid combinations with the highest percentage of progenies inheriting the Vf resistance gene were: ‘Starkrimson’ × ‘Florina’ (59.2%), followed by ‘Jonathan’ × ‘Florina’ (57.1%). The hybrids that inherited the Vf resistance gene have been transferred to the field and are being further examined for their resistance against scab infections in the field, in the proximity of a natural source of the inoculum infection pressure.

Effect of harvest time on total phenolic and flavonoid contents and antioxidant capacities of two grape varieties from Trebinje vineyard areaOriginal Paper

Mersija Deliæ, Milenko Blesiæ, Fikreta Behmen, Anstasija Anðu¹iæ, Fahrudin Topèiæ, Senad Murtiæ

Hort. Sci. (Prague), 2025, 52(4):304-312 | DOI: 10.17221/52/2025-HORTSCI

The aim of this study was to analyse the effects of harvest timing on the total phenolic and flavonoid contents, in addition to the total antioxidant capacity in the berries of ‘®ilavka’ and ‘Vranac’ varieties grown in the Trebinje vineyard area. Grape samples for both varieties were collected at three distinct points during their ripening. The chosen harvest dates were set 10 days apart, and the optimal date for grape harvesting was determined by assessing the sugar content and titratable acidity present in the grapes. Total phenolics, total flavonoids and total antioxidant activity of grape samples were determined by the Folin-Ciocalteu method, aluminium chloride method, and ferric reducing antioxidant power assay, respectively. The total phenolic and flavonoid contents, along with the total antioxidant capacity in the ‘Vranac’ grape, increased from the first to the second harvest date, but a decline was noted at the third harvest. ‘®ilavka’ grape exhibited an increase in total phenolic and flavonoid contents, as well as total antioxidant capacity from the first to the second harvest date, with no decrease recorded by the third harvest. As expected, the red grape variety ‘Vranac’ contained higher levels of phenolics and flavonoids than the light-skinned grape variety ‘®ilavka’.

Somatic embryogenesis and in vitro plant regeneration of Manzano (AAB) and Pelipita (ABB) banana cultivarsOriginal Paper

Adrián José Enríquez-Valencia, Martín Mata-Rosas, Claudia-Anahí Pérez-Torres, Enrique Ibarra-Laclette

[Ahead of Print]CAAS Agricultural Journals, X:X | DOI: 10.17221/35/2025-HORTSCI

There is significant interest in the propagation of bananas due to their substantial global economic importance, which is why this study aimed to develop an efficient protocol for in vitro propagation through somatic embryogenesis (SE) of the ‘Manzano’ and ‘Pelipita’ cultivars. Immature male flower bud explants were used for embryogenic callus induction. The ‘Manzano’ cultivar showed a higher percentage of embryogenic callus induction than ‘Pelipita’. Stereomicroscopic observations revealed that the embryogenic callus was asynchronous, as various stages of somatic embryos were noted. White translucent pro-embryogenic callus was efficiently utilized to establish embryogenic cell suspension. The development of different stages in the regeneration process of embryogenic cell suspension was also recorded. Embryos in the late coleoptilar stage, characterized by an opaque white morphology, were selected and transferred to an appropriate medium to evaluate the germination percentage. We found that the germination rate was highly efficient for both cultivars, exceeding 90% when using these embryos in the selected stage. Additionally, we observed that embryos that were 90 days old showed a 10–12% increase in germination compared to those that were 60 days old, confirming the importance of embryo maturation duration and the selection of embryogenic aggregates through the sieving of suspended cells to optimize regeneration efficiency.

Sustainability performance evaluation of tropical fruit supply chain in Indonesia using the best-worst methodOriginal Paper

Anisa Aprilia, Syafrial, Djoko Koestiono, Fitria Dina Riana, Silvana Maulidah

Agric. Econ. - Czech, 2026, 72(2):120-134 | DOI: 10.17221/46/2025-AGRICECON

Studies on the sustainability assessment of supply chain performance in tropical fruit still have limitations, whereas similar studies are more widespread in the manufacturing sector. This study aims to assess the sustainability performance of the tropical fruit supply chain in Indonesia. Performance evaluations were conducted for three producer organisations of tropical fruit with members ranging from 70 to 200 people in Banyuwangi Regency, the largest production centre in Indonesia. This study proposes a new approach, the best-worst method (BWM), to prioritise supply chain performance criteria derived from the SCOR (Supply Chain Operations Reference) model based on assessments by experts managing producer organisations. In the SCOR model, environmental and social criteria are added, resulting in seven criteria for evaluating supply chain performance, which include reliability, responsiveness, agility, cost, asset management, GreenSCOR, and social. Thus, the integration of BWM and SCOR can ensure higher consistency and reliability than traditional methods for assessing sustainable supply chain performance. The results revealed that reliability is the most important criterion for supply chain performance, which shows how important the maintenance of product quality is. In contrast, agility received the lowest score, indicating that there is a need to improve performance with respect to responding to high demand, managing safety stocks, and overtime in the shipping process. Moreover, this study gives a glimpse into the importance of evaluating sustainability performance for the tropical fruit sector, having perishable characteristics and great contributions to rural development. Hence, this study provides a solid practical guide for decision-makers in assessing the sustainable supply chain of tropical fruits in Indonesia.

Mitigating methane in dairy cattle: Integrated strategies and the evolving role of precision livestock farmingReview

Eva Mixtajová, Joana Nery, Radovan Kasarda, Muzaffer Denlí, Achille Schiavone, Alkan Çağlı, José Francisco Pérez, Hasan Hüseyin İpçak, Jo

Czech J. Anim. Sci., 2026, 71(2):41-58 | DOI: 10.17221/116/2025-CJAS


Modern dairy farming faces the dual challenge of meeting global food demands while mitigating its environmental impact, particularly greenhouse gas (GHG) emissions, such as methane (CH4), a potent contributor to climate change. This review explores the role of Precision Livestock Farming (PLF) technologies in monitoring and reducing CH4 emissions from dairy cattle. We evaluate state-of-the-art methods, including direct monitoring (e.g. respiratory chambers, GreenFeed systems) and indirect approaches (e.g. infrared milk spectroscopy, AI-driven analytics), alongside mitigation strategies such as nutritional optimisation, genetic selection, and ruminal additives. PLF emerges as a transformative tool, integrating real-time data on animal health, feed efficiency, and environmental conditions to optimise management practices and reduce emissions per unit of milk produced. By synthesising current research, we highlight the potential of PLF to reconcile productivity with sustainability, offering scalable solutions for the dairy sector. Critical gaps in real-time CH4 monitoring and farm-level implementation are identified, underscoring the need for further innovation. This review provides a roadmap for aligning dairy production with global climate goals while ensuring food security for the growing population.

Unravelling the bidirectional impact of Chinese agricultural subsidy policy on agricultural efficiency and farmers‘ income through panel data analysisOriginal Paper

Yungang Tang, Haojie Liao, Ye Wu, Gang Lei

Agric. Econ. - Czech, 2024, 70(4):165-177 | DOI: 10.17221/335/2023-AGRICECON


This study examined the bidirectional impact of Chinese agricultural subsidy policies on agricultural efficiency and farmers’ income. It employed panel data from 2004 to 2020 across 31 Chinese provinces, and the three-stage least squares method was used for simultaneous estimation. Different regions and farmer types were analysed separately. The findings revealed a significant bidirectional impact of the agricultural subsidy policy on agricultural efficiency and farmers’ income, signifying a strong positive feedback loop. Varied types and levels of subsidy policies differently impacted regions and farmer categories, showcasing diverse outcomes and adaptive responses to subsidy policies. The ratio of total subsidy to GDP (SUBGDP) positively impacted production efficiency and per capita disposable income. This result suggests that the subsidy policy helped enhance agricultural production efficiency and increased farmers’ income levels. Conversely, the ratio of various subsidies to the total subsidy manifested different directions and degrees of impact on production efficiency and per capita disposable income, suggesting areas where the subsidy policy framework can be optimised. In addition to presenting a theoretical discussion on agricultural subsidy policies, this study provides theoretical insights and policy recommendations for the formulation and implementation of an optimal agricultural subsidy policy.

Balancing conservation and intervention: Managing forest diebacks in Slovakia's Tatra National ParkOriginal Paper

Paula Pu¹kárová, Mikulá¹ Èernota, Ján Slivinský

J. For. Sci., 2026, 72(3):119-135 | DOI: 10.17221/87/2025-JFS


Disturbance regimes in Central European mountain forests are changing under the ongoing climate change, raising questions about how protected areas should respond to increasingly frequent windthrow and bark beetle outbreaks. In Tatra National Park, a major windstorm in 2004 triggered a landscape-scale bark beetle eruption that challenged long-standing expectations that non-intervention alone could safeguard forest ecosystems. Using the Socio-Ecological Systems framework, we combined long-term field observations with archival sources and stakeholder interviews to examine how ecological dynamics, governance structures, and actor perspectives interacted during and after the outbreak. We show that warming, abundant post-storm breeding substrate, and legacy Norwegian spruce (Picea abies) monocultures reduced forest resilience and enabled successive beetle waves. Governance fragmentation led to delayed decision-making, allowing large volumes of wind-felled timber to remain untreated and facilitating its spread into high-naturalness stands. In contrast, evidence from other European countries suggests that timely, spatially focused measures can reduce outbreak duration without compromising conservation values. Our results indicate that in disturbance-prone, spruce-dominated forest systems experiencing climate change, a combination of strict protection in core areas and timely, selective measures in adjacent zones is more likely to maintain resilience and support conservation outcomes than strictly passive or fully interventionist approaches.

A novel pigeon paramyxovirus type 1 isolated from a sick racing pigeon in the Qinghai–Tibet Plateau of China shows high virulence in chickensShort Communication

L Tong, X Gao, L Feng, D Yao, X Zhang, Y Du, Y Zhou, F Chen

Vet Med - Czech, 2024, 69(11):389-394 | DOI: 10.17221/15/2024-VETMED

Pigeon paramyxovirus type-1 (PPMV-1) is the causative agent of pigeon Newcastle disease (ND), which has caused huge losses to the pigeon industry. In this study, a PPMV-1 strain, PPMV-1/QH-01/CH/23, was isolated from a sick racing pigeon in the Qinghai–Tibet Plateau, China in 2023. The mean death time of chicken embryos and the intracerebral pathogenicity index (ICPI) were 76.8 h and 1.25, indicating a mesogenic strain. Pigeon morbidity and mortality were 100% and 80%, respectively, and both were 80% in chickens; therefore, this isolate was velogenic for both pigeons and chickens. The fusion gene was amplified and sequenced for phylogenetic analysis, and the results indicated that the isolated strain possessed a virulent fusion protein cleavage site motif, 112R-R-Q-K-R-F117, and belonged to genotype XX (former sub-genotype VIc) of class II; this was different from the predominant sub-genotype, VI.2.1.1.2.2, which is prevalent in pigeons. To the best of our knowledge, this is the first report of a novel genotype XX isolate possessing high virulence for both chickens and pigeons in the Qinghai–Tibet Plateau, China.

Influence of phosphite and phosphate fertilizers at three different pH levels under floating system on the growth, yield, and nutrient concentration of broccoliOriginal Paper

Amin Jahanian, Seyed Jalal Tabatabaei, Nosratollah Najafi, Martina Buèková, Farzad Rasouli, Jiøí Mlèek, Sezai Ercisli

Hort. Sci. (Prague), 2025, 52(2):120-130 | DOI: 10.17221/16/2024-HORTSCI

This study was conducted to determine the effects of phosphite and phosphate fertilisers on broccoli’s yield, growth, and nutritional status (Brassica oleracea L. var. italica cv. ‘Fiorentino’). In factorial combinations, experiments were conducted at three pH levels (5.5, 7.0, and 8.5) and three phosphorus source levels [Pi (phosphate), Phi (phosphite), and Pi + Phi]. Phi had a statistically significant negative effect on yield, producing immature and button-like flower heads. Decreases in chlorophyll index, Fv/Fm [ratio of variable fluorescence (Fv) to maximum fluorescence (Fm)], and leaf area were observed using the Phi treatment. These results indicate that fertilisation with Phi alone did not affect plant growth and yield. P (phosphorus) and K (potassium) concentrations in plants were increased by root fertilisation with Phi (floating system), but did not affect growth characteristics; increased Pi uptake in Phi-treated plants increased P and K concentrations in the sink source, resulting in reduced growth, phytotoxicity, and no head formation. While it may appear that Phi is upsetting the balance of solution nutrients and stressing the plants, the Phi-induced stress condition was identified by measuring proline levels and electrolyte leakage. Thus, phosphite could not be used as a P source for plants. However, Phi could be used as a plant nutrient source combined with conventional Pi fertilisers.

Effects of application of biostimulants and growth regulators on root traits and analysis of root architecture with machine learning in LiliumOriginal Paper

Ömer Sari

Hort. Sci. (Prague), 2025, 52(4):313-323 | DOI: 10.17221/100/2024-HORTSCI

Apart from the roots, the bulb is the most important organ for plant development of the lily plant. In this experiment, the effects of mycorrhizal, vermicompost and promalin applications on the root architecture of Lilium oriental hybrid ‘Adelante’, a bulbous plant, were to be investigated. It was found that the effect of the treatments on root length (128.6 cm), root surface area (8 cm3), number of tips (111.5), number of forks (354.4) and number of crossings (86.2) was lower than that of the control. In terms of root volume, the applications of vermicompost (3 cm2) and promalin (3 cm3) were the most effective. The most effective application on root diameter (3.5 mm) was promalin. In conclusion, the effect on mycorrhizal root development was lower than the control but higher than other applications. In addition, machine learning (ML) algorithms, including linear regression (LR), sequential minimal optimisation for regression (SMOreg), Gaussian process (GP) and artificial neural network-based multilayer perceptron (ANN-based MLP), were used in the study. The input variables were evaluated for modelling and predicting root traits. The performance values of the ML algorithms were noted in the following order: LR > SMOreg > GP > MLP. These results have important implications for the prediction of root growth in lily crops.

Heatmap and PCA-based evaluation of bioactive compounds and volatile profiles in aronia fruits under different drying methodsOriginal Paper

Çağlar Kaya

Czech J. Food Sci., 2025, 43(6):428-437 | DOI: 10.17221/106/2025-CJFS

This study compares the bioactive compound contents and volatile profiles of products obtained from the ‘Nero’ variety of aronia (Aronia melanocarpa L.) fruits subjected to three different drying methods: freeze drying, vacuum drying, and hot air drying. Total phenolic content, total flavonoid content, and antioxidant activity were evaluated. The highest values were observed in the freeze-dried samples, with 67.9 mg GAE·g–1 dry weight (DW), 41.7 mg CE·g–1 DW, and 88.6% antioxidant activity, respectively. Vacuum drying resulted in moderate levels of bioactive compounds, while hot air drying yielded the lowest values. Volatile compound analysis, based on relative peak areas obtained from Gas Chromatography-Mass Spectrometry (GC-MS), indicated that freeze drying retained the highest levels of key aroma compounds, including hexanal (15.4%), ethyl acetate (13.9%), methyl acetate (5.7%), benzaldehyde (5.2%), 1-butanol (4.4%), linalool (3.5%), hexane (3.3%), and 2-nonanol (3.1%). The heatmap and ANOVA analyses consistently demonstrated that the drying method had a significant effect on volatile compound retention, with freeze drying identified as the most effective technique for preserving the native aroma profile. One-way ANOVA showed statistically significant differences between groups (P < 0.001). Multivariate analysis via Principal Component Analysis (PCA) revealed clear distinctions in both bioactive profiles and volatile compositions across the drying methods. Overall, freeze drying proved to be the most effective method for preserving both bioactive and volatile components in dried ‘Nero’ aronia fruits.

Location-specific technology transfer model in an agricultural technology park, IndonesiaOriginal Paper

Harmi Andrianyta, Elisa Anggraeni, Sapta Raharja, Sukardi Sukardi

Res. Agr. Eng., 2024, 70(2):61-72 | DOI: 10.17221/7/2023-RAE

Diversity in the characteristics of agricultural locations has the potential to develop. Unfortunately, the weak transfer of technology based on the characteristics of the location indicates that this potential cannot grow properly. This research aims to synthesise a technology transfer model for an agricultural technology park (ATP) by considering site-specific conditions. This cross-case study was conducted at selected ATP locations. Model synthesis uses the system development life cycle stages of initiation, analysis, and design. The resource-based view approach was broken down into several variables during the analysis stage. Three location-specific technology transfer models were successfully developed: a technology transfer model based on highland specificity, a unique technology transfer model for urban farming, and a tourism village-based model.

Denitrification and Anammox and Feammox in the Yinchuan Yellow River wetlandOriginal Paper

Qingsong Guan, Yiqiao Zhou, Shuo Li, Fan Yang, Rentao Liu

Plant Soil Environ., 2024, 70(11):731-738 | DOI: 10.17221/318/2024-PSE

Denitrification, anaerobic ammonium oxidation (Anammox), and ferric iron reduction coupled with anaerobic ammonium oxidation (Feammox) are the nitrogen removal pathways in natural ecosystems. In this study, the differences between these three nitrogen removal pathways in a Phragmites australis covered site (LW), artificial grassland covered site (CD), poplar covered site (YD), and topsoil tillage after harvesting reed site (GD) in the Yinchuan Yellow River wetland were investigated using isotope tracing, metagenome, and quantitative polymerase chain reaction (Q-PCR) techniques. No 30N2 accumulation was detected in 15NH4+ addition incubations, indicating that Feammox was weak in all sites, which is consistent with a low abundance of the Feammox functional bacteria Acidimiprobiaceae sp. A6. The denitrification rates were 0.36 (LW), 0.5 (CD), 0.76 (YD) and 0.12 (GD) mg N/kg/day. The Anammox rates were 0.18 (LW) and 0.26 (GD) mg N/kg/day; other sites did not detect Anammox rate. Denitrification was the dominant pathway except for the CD site. The YD site had the highest abundance of denitrification genes, which was consistent with the denitrification rate.

Approach to the differentiated motivation of employees in agricultureOriginal Paper

Milo¹ Hitka, Lenka Li¾betinová, Jozef Ïurian, Agota Giedré Rai¹iené

Agric. Econ. - Czech, 2025, 71(1):46-57 | DOI: 10.17221/118/2024-AGRICECON

The capacity for flexibility, personal development, and intrinsic motivation is a crucial aspect needed by employees in the process of transforming agricultural organisations. This paper aims to determine the typically oriented groups of employees in terms of their motivation and verify whether the identified groups are invariant even under changing conditions over time. The data from 2019–2023 (from 374 respondents employed in agricultural enterprises in south-central Slovakia) were evaluated using descriptive and inferential (K-means cluster) statistics. According to preferences and constancy of attitudes, three clusters of employees called ‘Materialists’, ‘Team progressives’, and ‘Preferences settled’ were determined. The clusters were also solved in terms of stability over time. Despite the differences in the preferences of these clusters, relational factors indeed played one of the most critical roles, even in the case of materialistically oriented employees. The practical result of the research is the possibility of designing a differentiated motivation program specifically targeted to individual groups of employees with similar motivational preferences based on a competent statistical analysis of motivation. The results are used by agricultural businesses to design motivation programs for similarly motivationally oriented employees sophisticatedly.

Canine multiple primary tumours: Mammary tubular carcinoma, uterine leiomyosarcoma, and facial sebaceous epitheliomaCase Report

Kim SH, Baek YB, SI Park

Vet Med - Czech, 2024, 69(3):94-98 | DOI: 10.17221/103/2023-VETMED


Multiple primary malignant tumours (MPMTs) are multiple neoplasms with independent pathogenetic origins, placing great importance on the tumorigenesis and clinical treatment. However, due to the rare occurrence and diagnostic confusion, MPMTs have rarely been investigated in veterinary medicine. In this report, a 10-year-old intact female Maltese dog had MPMTs, consisting of two malignant tumours and one benign tumour each derived from a topographically different site: tubular carcinoma in the mammary glands, leiomyosarcoma in the uterus and sebaceous epithelioma in the cheek. The unique combination of MPMTs would be the first case in veterinary research to give insight into the diagnosis, disease characteristics, and surgical treatment.

Ability of soil microorganisms to degrade aminopyralid and its effect on their growthOriginal Paper

Martin Koudela, Miroslava Soukupová, Eva Jablonská, Tereza ©mrhová, Tomas Engl, Jaroslav Matìjka, Sebnem Kurhan, Petr Mar¹ík, David Novotný, Èenìk Novotný

Plant Soil Environ., 2025, 71(1):58-65 | DOI: 10.17221/586/2024-PSE

The study aimed at the isolation of microorganisms from aminopyralid (AP)-contaminated soil, evaluation of their ability to degrade AP, and examination of the effects of AP on microbial growth. Geotrichum candidum, Cladosporium herbarum, Candida subhashii, and Paenarthrobacter nicotinovorans were isolated and identified using enrichment. None of those strains were able to degrade 100 ppm AP within 2–3 weeks. In contrast, collection strains Pleurotus ostreatus ‘Spoppo’ and Bacillus velezensis FZB42 reduced AP concentration by 35.1% and 47.8%, respectively. Low sensitivity of growth to AP (400 ppm) on the malt-extract-agar medium was observed; inhibition values for C. herbarum and G. candidum were 52.4% and 22.8%, respectively, compared to 33.7% inhibition found with P. ostreatus ‘Spoppo’. Promotion of fungal growth was observed at low AP concentrations in the Czapek-Dox medium, the highest effect being in G. candidum. The growth promotion effect was confirmed with P. ostreatus ‘Spoppo’growing on wheat straw contaminated with Mustang Forte and Corello herbicides; total fruiting body mass yield increased 1.25- and 1.37-fold, respectively. The study offers insight into future strategies for mitigating the environmental impact of synthetic auxin herbicides.

Can income growth and environmental improvements go hand in hand? An empirical study of Chinese agricultureOriginal Paper

Chenchen Su, Jinchuan Shen, Fei Wang

Agric. Econ. - Czech, 2024, 70(7):321-333 | DOI: 10.17221/438/2023-AGRICECON

Advancing agricultural carbon emission efficiency and farmers’ income simultaneously is crucial for the sustainable progress of agriculture. Our study centered on 31 provinces and cities in China and investigated regional variances and the dynamic evolution aspects of coordinated development in farmers’ income and agricultural carbon emission efficiency, utilising panel data from 2005 to 2021. The analysis revealed the following trends: Firstly, China’s overall agricultural carbon emission efficiency was steadily increasing, mainly because of technological advancements. Secondly, the correlation between farmers’ income and agricultural carbon emission efficiency in China had notably improved from 0.318 to 0.775. Throughout the observation period, disparities in the levels of coordinated development were observed in various provinces with a diminishing fluctuation, indicating regional disparities as the primary instigator. Thirdly, the level of coordinated development highlighted positive clustering attributes, demonstrating an ‘east high, west low’ pattern; the evolution of coordinated development levels exhibited stability in maintaining the current status. This study holds significant value for developing countries in enhancing farmers’ income and agricultural carbon emission efficiency in a coordinated manner.

Pedo-climatic predictions and reality of sunflower (Helianthus annuus L.) growing in SlovakiaOriginal Paper

Jozef Vilèek, Matú¹ Maxin, Monika Lörincová, Miroslav Kudla

Plant Soil Environ., 2023, 69(11):545-553 | DOI: 10.17221/323/2023-PSE

This work aims to differentiate the rural land of Slovakia in view of the possibility of effective sunflower growing. The differentiation is based on pedo-climatic and production-economic parameters. Soil categorisation took into account the correlation between the site properties (soil and climatic conditions) and the biological and agrotechnical requirements of the crops. Sunflower requirements were included in yield databases using software filters such that a given site property excluded or limited sunflower growing, which was reflected in predicted production. The prediction was subsequently interpolated into four suitability categories: soils unsuitable for sunflower growing, less suitable soils, suitable soils and very suitable soils. A map of categories of soil suitability for sunflower growing was created using a Geographic Information System on the distribution of soil parameters in Slovakia. According to our calculation in Slovakia, 18.8% of farmland is very suitable for sunflower growing, 24.9% is suitable, 16.6% is less suitable, and 39.7% is unsuitable for sunflower growing. These categories are characterised and specified in detail in the paper in terms of geographical, soil, climatic, production and economic parameters. The analysis of the actual sowing of sunflowers between 2018 and 2021 showed that 51% of the areas were located in very suitable soils, 32% in suitable, 10% in less suitable soils and 7% in unsuitable soils for cultivation.

Selection of high-quality tree peony varieties suitable for the south Yangtze River areaOriginal Paper

Zijian Li, Yuxuan Zhu, Xinai Yang, Yajun Xiang, Ying Zhang, Hongbing Wang, Zheng Wang, Shuiyan Yu, Yonghong Hu

Hort. Sci. (Prague), 2025, 52(1):42-52 | DOI: 10.17221/11/2024-HORTSCI

To select tree peony varieties with high ornamental value suitable for the hot and humid environment of the south Yangtze River area, 74 tree peony varieties from the Chenshan Botanical Garden in Shanghai were selected as experimental materials. The experiment involved initial selection for leaf humidity and heat tolerance, assessing the ornamental value during the flowering period of the following year and measuring a series of indicators such as the relative chlorophyll content of the leaves. Methods including principal component analysis, cluster analysis, and comprehensive membership function were employed. The results indicated that among the varieties assessed for humidity and heat tolerance, 43 obtained a composite score of 3.75 or above. Upon further assessment of the flowering period for these 43 varieties in the subsequent year, 14 varieties clustered in the top tier based on their scoring for ornamental value. Then, during the summer season, physiological indicators were measured for the previously selected 14 tree peony varieties. Combining these data with the comprehensive membership function, the humidity and heat tolerance of each variety were quantified. The synthesis of scores, combined with cluster analysis, revealed that varieties including ‘Yinhong Qiaodui’, ‘Shengge Jin’, ‘Linghua Zhanlu’, ‘Baixue Gongzhu’, ‘Di Guan’, and ‘Cunsong Ying’ exhibit both high ornamental value and tolerance to humidity and heat, making them suitable for cultivation in the south Yangtze River area.

Effect of Trichoderma harzianum against Fusarium oxysporum in resistant and susceptible tomato cultivarsOriginal Paper

Patcharaporn Suwor, Manthana Mueangkhong, Praphat Kawicha, Thanwanit Thanyasiriwat, Suchila Techawongstien, Sanjeet Kumar, Wen-Shi Tsai, Somsak Kramchote

Hort. Sci. (Prague), 2025, 52(2):173-181 | DOI: 10.17221/126/2023-HORTSCI

Fusarium wilt disease presents a substantial challenge to tomato production, especially in an open field environment. The peroxidase (POD) activity and total phenolic compounds (TPCs) play a crucial role in measuring the antioxidant capacity of plants. Understanding the variations in the POD and TPC levels during disease-induced stress becomes important for effectively managing Fusarium wilt and enhancing tomato production. This study investigates the impacts of Trichoderma harzianum inoculation through the root drip method on five tomato cultivars. It compares these cultivars to their non-treated counterparts when they are subjected to infection by Fusarium oxysporum f. sp. lycopersici (Fol). The results showed that the level of resistance to Fol is based on the specific tomato cultivar. Notably, ‘MT26’ exhibited the lowest disease severity index (DSI), indicating a strong response, whereas ‘CLN3682F’ showed notable susceptibility. Regarding the POD and TPC activity, its exhibition differed in compatibility with the response of each tomato cultivar to Fusarium wilt disease. The resistant cultivars increased the POD activity after the Trichoderma induction before the Fol inoculation, and this activity was further boosted when exposed to disease conditions. Consequently, enhancing the POD and TPC levels during the initial stages could potentially serve as a systemic defence mechanism of tomatoes against the Fusarium wilt disease.

The effect of rootstocks on morphological, physiological, and gene expression characters of citrus seedlings grown under drought conditionOriginal Paper

Nirmala Friyanti Devy, Siti Subandiyah, Sri Widyaningsih, Hardiyanto Hardiyanto, Farida Yulianti, Dita Agisimanto, Agus Sugiyatno, Mutia Dwiastuti

Hort. Sci. (Prague), 2024, 51(4):255-269 | DOI: 10.17221/136/2023-HORTSCI

To date, ‘Japansche Citroen’ (JC) has only been used commercially as a rootstock in Indonesia; however, the use of suitable rootstock remains challenging because of water limits in different places. The morphological, physiological, and gene expression changes of one-and-a-half-year-old mandarin cv. ‘Keprok Batu 55’  (KB) and sweet orange cv. ‘Manis Pacitan’  (MP) budded onto ‘Japansche citroen’ (JC), ‘Rough Lemon’ (RL), ‘Salam’ (S), ‘Volkameriana’ (V), and ‘Cleopatra Mandarin’ (C) rootstocks, subjected to six-week drought-stress conditions, were examined under a shade house. The experiment was conducted in Junrejo Subdistrict ( ± 990 m a.s.l.), Batu City, East Java Province, Indonesia, from January 2022 to May 2023. The experimental design was a factorial randomized block design with two factors: rootstocks as factor I and two citrus species as factor II, with three replications. A low shoot/root (S/R) ratio indicates much more root development than shoots observed in KB/C (0.89) and MP/RL (0.87) plants under drought conditions; the MP/RL plant had the greatest stomatal density (16.0/0.015 mm2) and percentage of stomatal closure (58.8%). In this condition, it had lower leaf relative water content (RWC) than the control, with comparatively high RWC ranging from 45–55% in KB/JC, KB/S, MP/C, and MP/RL. The drought did not affect cell membrane damage, although this did slightly increase the quantity of chlorophyll a, b, and carotenoids (P < 0.05). Aside from that, leaf proline and total soluble sugar levels were higher in the dryness than in the control, with the combination of KB/C (331.6 μ mol proline/g fresh weight), MP/JC, and MP/RL plants having the highest (347.9 and 337.1 μmol proline/g fresh weight). Meanwhile, the plants with the greatest quantities of soluble sugar were KB/C (35.9 mg/g dry weight) and MP/V (75.3 mg/g dry weight). Regardless of scion-rootstock interaction, KB enhanced the relative quantity of several genes such as 1-Aminocyclopropane-1-carboxylate (ACC) synthase, Chlase, ethylene receptors (ETR1), osmotin, plasma membrane instrinsic proteins (PIP1), and PIP2 allowing it to respond more effectively to drought stress conditions. In contrast, MP only increased Chlase and ETR1 ones. Under drought conditions, the KB/C and MP/RL combinations are assumed to be more adaptable than others.

Biochar application influences the stability of soil aggregates and wheat yieldsOriginal Paper

Weijun Yang, Zilong Wang, Hongmei Zhao, Daping Li, Hongtao Jia, Wanli Xu

Plant Soil Environ., 2024, 70(3):125-141 | DOI: 10.17221/199/2023-PSE

In the present study, a field establishment was initiated in 2018 with eight treatment conditions using biochar application rates of 0, 10, 20, or 30 t/ha and nitrogen application rates of 0 or 150 kg/ha. After two years, the impact of biochar on carbon-nitrogen distributions, soil aggregate stability, and wheat yields was then assessed. The predominant mechanical aggregates after two years were > 5 mm and 2–5 mm granular aggregates, with notable increases in the amounts of these aggregates following the application of biochar with or without nitrogen that coincided with an increase in soil aggregate mechanical stability. Relative to control conditions, aggregate mean weight diameter (MWD) and geometric weight diameter (GMD) values rose by 17.6% and 24.3% for biochar with nitrogen treatment (N: 150 kg/ha; biochar: 20 t/ha), respectively. Biochar application alone and the application of both biochar and nitrogen fertiliser were associated with 6.4–20.2% and 20.7–42.7% increases in spring wheat yields, respectively. Overall, the results of these analyses highlight the value of applying biochar to improve soil quality and boost crop yields proximal to the study site. This study provided the scientific basis for the rational fertilisation and scientific management of biochar combined with nitrogen fertiliser in the irrigation area of Northern Xinjiang, China.

Ecophysiological aspects of some sweet cherry cultivars from the North-East of RomaniaOriginal Paper

Iulia Mineata, Ionel Perju, Sorina Sîrbu, Iuliana Elena Golache, Ionut Vasile Ungureanu, Stefanica Ostaci, Carmen Doina Jitareanu

Hort. Sci. (Prague), 2024, 51(4):305-313 | DOI: 10.17221/113/2023-HORTSCI

The physiological performance, growth and competitive ability of fruit trees are increasingly affected by the effects of global climate change, very different at a regional level, which mainly causes considerable changes in water availability. The purpose of this study was the evaluation of three sweet cherry cultivars from the Research Station for Fruit Growing (RSFG) Iași, Romania under the climatic conditions of 2022–2023 by performing physiological investigations into the water regime and the transpiration process through the stomatal conductance, the water content of the leaves as well as their dehydration rate after 24 hours. The obtained data were statistically interpreted taking three experimental factors into account: factor A consisted of three distinct phenological stages (full flowering, fruit about 80% of the final size and fruit ripening); factor B constituted by the three cultivars (‘Van’, ‘Andreiaș’ and ‘Margonia’); and factor C was constituted by the canopy area from the samples (internal and external). The experimental variants statistically interpreted by Duncan’s test (P ≤ 0.05) registered significant differences. The Pearson correlation coefficient (R2) between the measured variables obtained positive distinctly significant values of R2 = 0.686 (with the stomatal conductance) and negative distinctly significant values of R2 = –0.874 (with the water content). The obtained results will support the development of predictive models for different irrigation and breeding strategies to improve the sweet cherry production in temperate continental climates.

Identification and validation of stem rot disease resistance genes in passion fruit (Passiflora edulis)Original Paper

Yanyan Wu, Guoying Shi, Junniu Zhou, Qinglan Tian, Jieyun Liu, Weihua Huang, Xiuzhong Xia, Haifei Mou, Xinghai Yang

Hort. Sci. (Prague), 2025, 52(1):67-80 | DOI: 10.17221/161/2023-HORTSCI

Stem rot disease poses a significant challenge in passion fruit production, necessitating the identification of resistant genes for the development of stem rot resistant varieties. In this study, we conducted artificial inoculation of Fusarium solani on leaves of two passion fruit varieties, ‘Huangjinguo’ and ‘Ziguo 7’. Leaf samples were collected at 0 h, 24 h, and 48 h post-inoculation for RNA-sequencing (RNA-seq) analysis, and 3 370, 4 464, and 3 974 differentially expressed genes (DEGs) were identified at these stages. Gene Ontology (GO) analysis revealed associations with functions such as response to reactive oxygen species (ROS), response to hydrogen peroxide, and protein complex oligomerisation. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis highlighted the enrichment of DEGs in the phenylpropanoid biosynthesis pathway, including genes such as ZX.06G0025070, ZX.01G0064640, ZX.04G0011040, ZX.05G0011380, all implicated in lignin biosynthesis. Weighted gene co-expression network analysis (WGCNA) identified three modules significantly associated with passion fruit stem rot resistance. Network analysis highlighted ZX.08G0013660 as the gene with the highest connectivity in these modules, featuring a leucine-rich repeat domain. Reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) analysis further validated ZX.08G0013660 and other genes as potential candidates for passion fruit stem rot resistance. Overall, genes related to ROS, phenylpropanoid biosynthesis and leucine-rich repeat domain protein likely play critical roles in passion fruit stem rot resistance. This study provides new insights for breeding passion fruit varieties resistant to stem rot disease.

Hydrological risks of clear-cuts after the bark beetle outbreaks and related forest management decisions in Central EuropeReview

Vít ©rámek, Kateøina Neudertová Hellebrandová, Vìra Fadrhonsová

J. For. Sci., 2026, 72(4):161-173 | DOI: 10.17221/19/2026-JFS


The review synthesises current knowledge on the hydrological and hydrochemical risks associated with large-scale clear-cutting following unprecedented bark beetle outbreaks in Central Europe. By analysing 107 sources published primarily between 2000 and 2026, we evaluate the divergent impacts of natural forest dieback versus intensive salvage logging. The rapid loss of Norway spruce [Picea abies (L.) Karst.] canopy has fundamentally altered the microclimate, shifting the energy balance from latent to sensible heat flux, which results in ground temperature increases of up to 5.2 °C. Hydrological consequences include a 16–48% reduction in interception and a cessation of transpiration, leading to an increase in annual water yield by 6–21% and potentially accelerated peak discharges, particularly in headwater catchments where maximum flows can increase by over 50%. The synthesis highlights a critical 'nitrate pulse' exceeding 50 mg·L–1 in managed areas, contrasting with higher hydrochemical resilience in unmanaged stands. We emphasise that forest management must ensure sufficient soil protection during the logging and wood transportation, which can reduce hydraulic conductivity by over 40%. The role of logging residues is important because they cover and protect the soil environment. The study concludes that utilising pioneer species and spontaneous succession in combination with timely artificial reforestation represents a superior strategy for stabilising the microclimate and restoring hydrological functions.

Assessment of ozone impact on forest vegetation using visible foliar injury, AOT40F exposure index and MDA concentration in two meteorologically contrasting yearsOriginal Paper

Radek Novotný, Leona Vlasáková, Vít ©rámek, Václav Buriánek, Nina Bene¹ová

J. For. Sci., 2025, 71(1):40-56 | DOI: 10.17221/57/2024-JFS

This study aimed to evaluate ozone (O3) phytotoxic potential using AOT40F (accumulated O3 concentration over a threshold of 40 ppb for forest protection), document visible foliar O3 injury across eight forest monitoring plots, analyse MDA (malondialdehyde) content in leaves and needles, and assess the relationship between visible injury and plot conditions. Initial findings are based on data from the 2021 and 2022 vegetation seasons. AOT40F values exceeded the critical level of 5 ppm·h–1 at all plots, with higher values in 2022. The correlation between AOT40F and visible injury was inconsistent; in 2021, minimal visible O3 injuries were observed, while these were more frequent in 2022, notably on Fagus sylvatica leaves. The altitude effect on O3 concentration indicates greater vegetation damage at higher altitudes. In contrast, the AOT40F-altitude relation was not significant. The 2021 vegetation season was characterised by lower temperatures and higher relative air humidity and soil moisture in comparison to 2022. Stomatal conductance conditions were similar in both years, except for lower soil moisture in 2022. Soil moisture, air humidity, and temperature together accounted for about 50% of the variance in visible injury in 2022. The findings suggest that the AOT40F capability for predicting damage to vegetation is limited and highlight the importance of future research focusing on stomatal O3 flux-based approaches.

Tree-ring based climate reconstruction and growth–climate analysis of Pinus kesiya Royle ex Gordon in Doi Khuntan National Park, northern ThailandOriginal Paper

Kritsadapan Palakit, Khwanchai Duangsathaporn, Nathsuda Pumijumnong, Supasit Sriarkarin, Thanyaporn Bungbai, Pichit Lumyai

J. For. Sci., 2026, 72(4):174-187 | DOI: 10.17221/78/2025-JFS


Tree-ring analysis is a valuable tool for understanding long-term climate patterns and their influence on tree growth. This study investigates the climate–growth relationships of Khasi pine (Pinus kesiya Royle ex Gordon) in Doi Khuntan National Park, northern Thailand (at elevations of 850 to 1 035 m a.s.l.), to reconstruct past climate and inform forest management. Using 48 cross-dated increment cores, we developed an 83-year chronology (1936–2018). Standard dendrochronological methods and regression models were applied. The radial growth of P. kesiya was primarily influenced by moisture availability, showing significant positive correlations with March rainfall (= 0.39, P < 0.01) and April–July relative humidity (r = 0.45, P < 0.01). Growth was negatively correlated with April–July mean temperature (r = –0.47, P < 0.01), indicating that warmer wet seasons induce stress. False-rings served as complementary intra-annual drought proxies, linked to cool-dry transitional periods. Multiple regression models explained 40.6% of radial growth variance and 65.6% of false-ring frequency variance. Reconstructed climate series revealed significant warming trends since the 1930s, most pronounced in April extreme minimum temperature, which increased by +0.98 °C over the study period (Mann-Kendall test, P < 0.01). These findings highlight the vulnerability of montane pine forests to increasing temperatures and atmospheric dryness, providing a multi–proxy baseline for climate change adaptation.

Hydraulic sizing of forest road pipe culvertsOriginal Paper

Karel Zlatu¹ka, Petr Kupec, Martin Duchan, Alena Tichá, Jan Deutscher

J. For. Sci., 2025, 71(3):113-123 | DOI: 10.17221/95/2024-JFS

This article presents guidelines for assessing the optimal dimensions of forest road pipe culverts, based on input of actual and experimental data to standard engineering techniques. In doing so, we assess the need for (i) changes in the parametrisation of inputs (i.e. culvert micro-catchment dimensions, rainfall and resultant culvert flow, and culvert flow rates during culvert hydraulic dimensioning), and (ii) the need to redesign culvert outlets in relation to flow speed. Our results demonstrate that values for most inputs presently used under current technical practice for forest road pipe culvert sizing are significantly higher than those achieved under experimental conditions. The data on outlet flow velocities strongly suggests that strengthening of culvert outlet aprons will be crucial for their future operation.

An investigation of the presence of Xylella fastidiosa in Cicadomorpha specimens collected in different habitats in PolandOriginal Paper

Monika Ka³u¿na, Gra¿yna Soika, Wojciech Warabieda

Plant Protect. Sci., 2026, 62(2):146-162 | DOI: 10.17221/207/2024-PPS


A quarantine organism, the bacterium Xylella fastidiosa (Xf), is a xylem-inhabiting, vector-transmitted, Gram-negative, and very slow-growing bacterium in the Lysobacteraceae (earlier Xanthomonadaceae) family. The spreading of X. fastidiosa over long distances occurs mainly via import/export human-mediated transportation of mainly latently or symptomatically infected plant material. Short-distance distribution is usually by xylem sap-feeding insects. Until now, the presence of X. fastidiosa has not been reported or studied in Poland. During our study, over 500 individuals from the four families: Cicadellidae, Aphrophoridae, Delphacidae and Membracidae were collected in different geographical regions of Poland. Real-time PCR with primers for rimM gene and nested PCR to detect X. fastidiosa, using DNA extracted directly from selected insects known as potential vectors of X. fastidiosa, did not confirm the bacterium's presence in these insects.

Genome-wide identification and in silico expression analysis of CCO gene family in Citrus sinensis (orange) in response to citrus greeningOriginal Paper

Sadaf Sarwar, Muhammad Shafiq, Layba Tasawar, Iram Gull, Jannat Akram, Maha Al-Roshdi, Gabrijel Ondrasek, Muhammad Shafiq Shahid

Czech J. Genet. Plant Breed., 2025, 61(3):113-127 | DOI: 10.17221/11/2025-CJGPB

Citrus sinensis (L.) Osbeck (sweet orange) is the most important cultivated citrus fruit in the world. However, Hanglongbing (HLB) disease, caused by Candidatus Liberibactor asiaticus (CLAs), poses a major threat to sweet orange production, by hindering colour, quality and export. Carotenoid cleavage oxygenases (CCOs), which include carotenoid cleavage dioxygenases (CCDs) and 9-cis-epoxycarotenoid dioxygenases (NCEDs), are essential for plant growth, development, and adaptation to phytohormonal, biotic, and abiotic stresses. This study identified 14 CsCCO genes in C. sinensis. Structural and conservation studies were conducted using gene structure and conserved domain analysis. Genomic localisation, gene duplication, and similarity among these genes were also examined. Gene ontology analysis predicted that CsCCOs could be involved in the carotene catabolic process. Analysis of cis-regulatory elements revealed that most CsCCO genes are involved in responses to stress, light signalling, and plant growth regulation. Genes in the 9-cis-epoxycarotenoid dioxygenase (NCED) subgroup are predominantly localised in chloroplasts, whereas genes in other subgroups are primarily found in the cytoplasm. All 13 of the CsCCOs genes identified were regulated by 25 microRNAs, indicating the crucial role of microRNAs in gene regulation in Citrus sinensis. The expression patterns of CsCCO genes in response to biotic and abiotic stress were studied. Transcriptome analysis demonstrated that CsNCED3 and CsNCED10 were up-regulated in response to HLB. This provides insight into the function of CCO genes in C. sinensis and identifies potential candidate genes for combating citrus greening.

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