Journal of Agronomy and Crop Science最新文献

{"title":"Screening of Wheat Varieties Under Combined Low Temperature and Waterlogging Stress Based on Physiological Phenotyping and Transcriptome","authors":"Tianhao Liu, Fasih Ullah Haider, Peng Zhang, Yang Gao, Feng Zhang, Chunsheng Zhao, Shuxin Li, Xiangnan Li","doi":"10.1111/jac.70194","DOIUrl":"https://doi.org/10.1111/jac.70194","url":null,"abstract":"Compound low‐temperature and waterlogging events frequently co‐occur during the wheat ( <jats:styled-content style=\"fixed-case\"> <jats:italic>Triticum aestivum</jats:italic> </jats:styled-content> L.) jointing stage. Still, cultivar ranking and the trait dimensions that discriminate tolerance under this compound stress remain poorly resolved because most studies consider each stress in isolation. Here, we screened 30 wheat cultivars under four treatments: normal water and temperature (NN), waterlogging at normal temperature (WN), normal water at low temperature (NL) and waterlogging at low temperature (WL). At jointing, potted plants were exposed outdoors in open‐top chambers (OTCs; day/night 15/−4°C) and/or waterlogging for 10 days, after which 26 physiological, biochemical and root anatomical indices were quantified (including chlorophyll fluorescence, relative electrical conductivity, TTC‐based root activity and root morphological traits) and yield components were determined at maturity. Integrating standardized indicators using principal component analysis, a membership function and clustering separated cultivars into four tolerance groups, identifying JM22 as highly tolerant and LY615 as highly sensitive. Across the panel, WL imposed the most potent inhibition of photosynthetic performance, root function and grain yield, exceeding the effects of WN or NL alone. Consistent with this ranking, JM22 maintained higher PSII efficiency and root activity under WL, accompanied by stronger induction of stress‐responsive, photosynthesis‐related gene sets. Root transcriptome analysis further indicated shared activation of phenylpropanoid biosynthesis in both cultivars, whereas differential regulation of plastid/photochemistry‐associated and nitrogen‐metabolism pathways distinguished tolerant versus sensitive responses. Together, these results provide a trait‐and‐transcript framework for identifying germplasm and prioritizing candidate processes for breeding and management in environments prone to concurrent cold and waterlogging.","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"26 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147752882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increasing Exposure of Cotton‐Producing Regions to Heat During Critical Growth Stages Under Projected Warming Scenarios in Xinjiang, China","authors":"Tongtong Shi, Wei Zhang, Tong Li, Xinyue Zhang, Chenyu Zhang, Tauseef Iqbal, Yadong Li, Zhanbiao Wang, Shengli Liu","doi":"10.1111/jac.70192","DOIUrl":"https://doi.org/10.1111/jac.70192","url":null,"abstract":"Cotton cultivated in Xinjiang accounts for more than 90% of its production in China, equivalent to 22% of global production. Given the rapid warming rate, the extent to which cotton cultivation is exposed to heat, particularly during critical growth stages, remains uncharacterized. To settle this issue and propose potential adaptation measures, we evaluated the exposure of cotton cultivation to heat during the flowering and boll development stages in Xinjiang, and checked mitigation availability by changing the onset of flowering time. We employed extreme degree days (EDD, d·°C) and accumulated heat stress days (AHSD, d) to depict the spatiotemporal patterns of such exposure over the historical period (1961–2020) and two different warming scenarios (1.5°C and 2.0°C). The results revealed a modest upward trend of heat exposure during the critical growth stages, characterised by considerable interannual variability. Specifically, EDD and AHSD increased at 0.12 d·°C·a <jats:sup>−1</jats:sup> and 0.12 days·a <jats:sup>−1</jats:sup> , respectively. Despite notable spatial heterogeneity, regions such as Hami, Paotai, Yuli, and Mossel were identified as the most vulnerable, with EDD exceeding 25 d·°C and AHSD surpassing 9 days. Future projections suggest a substantial intensification of heat exposure, with EDD and AHSD values tripling and doubling under the 2.0°C warming scenario. Our findings highlight the critical importance of optimizing growth stage windows to reduce cotton's exposure to heat. Adaptive measures, such as adjusting planting windows and breeding new cultivars, are urgently needed to mitigate the negative climate impacts and ensure cotton productivity.","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"21 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147725596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Soil Water Dynamics, Evapotranspiration Partitioning and Grain Yield of Drip‐Irrigated Maize ( Zea mays L.) Under Various Irrigation Lower Limits","authors":"Han Wang, Jiayu Wang, Hao Kong, Wenhui Jiang, Chenglin Yang, Zhijun Li, Zhentao Bai, José L. Araus, Junliang Fan","doi":"10.1111/jac.70193","DOIUrl":"https://doi.org/10.1111/jac.70193","url":null,"abstract":"Quantifying crop evapotranspiration (ET <jats:sub>c</jats:sub> ) dynamics and their partitioning into soil evaporation (E) and plant transpiration (T) is crucial for improving water productivity and developing precise irrigation strategies. However, the spatiotemporal distribution of soil moisture and its influence on ET <jats:sub>c</jats:sub> partitioning in drip‐irrigated maize fields are poorly understood. This study investigated soil water dynamics, leaf area index (LAI), ET <jats:sub>c</jats:sub> and its components under varying irrigation lower limits (W1: 50%–60% FC, W2: 65%–75% FC, W3: 80%–90% FC, where FC was the soil field capacity) during different maize growth stages in 2023 and 2024. The results indicated that as the irrigation amount increased, the vertical advance depth of the soil wetting front increased more significantly than the surface wetting radius Maize growth was suppressed at the tasselling stage under W1. T/ET <jats:sub>c</jats:sub> showed a quadratic relationship with ET <jats:sub>c</jats:sub> ( <jats:italic>R</jats:italic> <jats:sup>2</jats:sup> = 0.50) when reference evapotranspiration (ET <jats:sub>0</jats:sub> ) exceeded 1.9 mm d <jats:sup>−1</jats:sup> , with an inflexion point at ET <jats:sub>c</jats:sub> = 6.1 mm d <jats:sup>−1</jats:sup> . T/ET <jats:sub>c</jats:sub> correlated strongly with LAI through a logarithmic function ( <jats:italic>R</jats:italic> <jats:sup>2</jats:sup> = 0.95), especially at early growth stages. Soil water content (SWC) demand peaked at the tasselling stage. An irrigation strategy that maintains higher soil moisture (e.g., W3: 80%–90% FC) during the water‐sensitive tasselling and seedling stages, while applying mild deficit irrigation (e.g., W2: 65%–75% FC) during the jointing and filling‐to‐maturity stages, can optimize the T/ET <jats:sub>c</jats:sub> ratio and achieve synergistic improvements in grain yield (GY) and water productivity (WP). This study enhanced the understanding of soil water's role in ET <jats:sub>c</jats:sub> partitioning in drip‐irrigated maize, providing a quantitative basis for optimizing irrigation scheduling to enhance both GY and WP.","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"22 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147720038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of Biostimulants in Mitigating Drought Stress in Wheat ( Triticum durum L.) Over Two Growing Seasons","authors":"Chayma Ikan, Salma Toubali, Redouane Ouhaddou, Lahoucine Ech‐chatir, Boujemaa Fassih, Abderrahim Boutasknit, Abdelaziz Nilahyane, Abdelilah Meddich","doi":"10.1111/jac.70188","DOIUrl":"https://doi.org/10.1111/jac.70188","url":null,"abstract":"This study aimed to compare the impact of biostimulants on wheat ( <jats:styled-content style=\"fixed-case\"> <jats:italic>Triticum durum</jats:italic> </jats:styled-content> L.) in two consecutive field experiments conducted in 2023 and 2024. The experiments tested the effects of <jats:italic>Bacillus</jats:italic> sp., <jats:styled-content style=\"fixed-case\"> <jats:italic>Bacillus subtilis</jats:italic> </jats:styled-content> (R), arbuscular mycorrhizal fungi (M), and compost (C) under two irrigation regimes: 100% crop evapotranspiration (ETc) for well‐watered conditions and 30% ETc for drought stress. Furthermore, the research focused on the combined and individual impacts of these biostimulants on wheat growth, yield and soil properties. The obtained results showed that drought stress caused significant declines in biomass, physiological traits and biochemical markers in both years. Furthermore, the application of biostimulants, especially C + M and M + R combinations, resulted in significant improvements. In 2023, shoot and root dry weights under drought stress increased by 137% and 72%, respectively, compared with the control. The 2024 results confirmed similar trends, with grain and straw yields rising by 167% and 130%, respectively. Additionally, biostimulants/biofertilisers positively impacted soil quality highlighting their role in enhancing wheat's resilience to drought through improved soil–plant interactions. These results underline the long‐term benefits of integrating biostimulants/biofertilisers into wheat farming under water‐limited conditions.","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"356 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147695752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Impact of Drought Stress on Common Bean Landraces (Phaseolus vulgaris L.) in Mediterranean Environment: Agronomic Performance and Tolerance to Stress Evaluation","authors":"Giovanni Preiti,&nbsp;Antonio Calvi,&nbsp;Maurizio Romeo,&nbsp;Monica Bacchi","doi":"10.1111/jac.70187","DOIUrl":"10.1111/jac.70187","url":null,"abstract":"<p>Drought events represent an ever-growing concern in Mediterranean areas. The occurrence and intensity of this abiotic stress can variously affect the growth and productivity of common bean. In order to shed light on the impact of the drought stress on the growth and agronomic performance of the crop, forty-four landraces and two testers were grown under stress and non-stress conditions. The water deficiency started on the onset of the reproductive phase. The experiment was carried out as a split-plot design over a period of 2 years. The effect of the drought stress on the common bean landraces was assessed by analysing the results of the grain yield and its components, which were significantly affected by the water availability (<i>p</i> ≤ 0.001). Drought tolerance indices were then calculated based on the grain yield results to further investigate the effect of the water deficiency on the crop phenology and productivity, and to identify drought-tolerant genotypes. Six landraces with climbing habitus were identified as the most drought tolerant; two dwarf landraces showed low yield depression and low susceptibility to drought. These drought-resistant candidates could be used to maintain the traditional cultivation of common bean in areas exposed to limited water availability in Southern Italy and other territories with similar climate conditions.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jac.70187","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147664549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Supplemental Irrigation on Total Chlorophyll Content, Chlorophyll Fluorescence and Water Use Efficiency in Barley (Hordeum vulgare L.) in Semi-Arid Environments","authors":"Yahya Bani Khalaf,&nbsp;Abdul Latief Al-Ghzawi,&nbsp;Abdallah Aldahadha,&nbsp;Zakaria I. Al-Ajlouni,&nbsp;Abdel Rahman Al-Tawaha,&nbsp;Arun Karnwal,&nbsp;Tabarak Malik","doi":"10.1111/jac.70185","DOIUrl":"10.1111/jac.70185","url":null,"abstract":"<div>\u0000 \u0000 <p>In Jordan and other arid and semi-arid Middle Eastern countries, water scarcity and unpredictable rainfall patterns make crop productivity difficult. Thus, breeding strategies aim to improve the stability of drought-stressed barley (<i>Hordeum vulgare</i> L.) production. This research examined the impact of four irrigation regimes: rainfed (0%) and supplementary irrigation (SI) at 50%, 75% and 100% of field capacity (FC) on the yield, yield components and physiological parameters of two barley cultivars (Acsad176 and Yarmouk) during two growing seasons. A three-replicate split-plot design was used with irrigation treatments as the main factor and cultivars as the sub-factor. SI outperformed rainfed conditions in grain yield and water-use efficiency (WUE), especially at 75% FC, where yield and resource use were optimised. Improved physiological characteristics like chlorophyll fluorescence (F_v/F_m), total chlorophyll content (measured by SPAD meter) and harvest index (HI) increased crop production. Acsad176 produced higher grain yield and WUE across all treatments, supported by its superior physiological performance and more grains per spike. At the same time, Yarmouk's earlier maturity allowed partial avoidance of terminal heat stress but resulted in lower yields. Rainfed conditions caused substantial yield reductions, highlighting SI's importance in mitigating the effects of drought. These findings demonstrate that Acsad176 is a promising cultivar for enhancing barley production in semi-arid regions and emphasise the potential of traits like SPAD and F_v/F_m as selection parameters in breeding programs to develop drought-resistant cultivars.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147648992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genotype-Specific Responses of Maize (Zea mays L.) to Exogenous Melatonin in Mitigating Flooding Stress","authors":"Jiu Yang Mao,&nbsp;Muhammad Ali Shah,&nbsp;Hasnain Abbas,&nbsp;Yan Rui Gu,&nbsp;Bing Wei Wang,&nbsp;Cheng Qiao Shi,&nbsp;Rui He,&nbsp;Xun Bo Zhou","doi":"10.1111/jac.70184","DOIUrl":"10.1111/jac.70184","url":null,"abstract":"<div>\u0000 \u0000 <p>Flooding stress severely constrains maize growth at the seedling stage. Here, we determined the mechanism and an effective dosage of foliar melatonin (MT) in alleviating flooding stress injury for three Guangxi maize genotypes (Guidan 668, Guidan 162 and Zhaofeng 505). Seedlings at the three-leaf stage were subjected to flooding simulated by maintaining a 2–3 cm water layer in pots for 7 days, and leaves were sprayed with MT at 0, 50, 100, 150 and 200 μM every day. Flooding significantly decreased plant height, root length, relative water content, dry matter accumulation and relative chlorophyll content across genotypes, whereas intensifying oxidative stress. MT mitigated these adverse effects in a concentration-dependent manner, with 100 μM MT consistently showing the most pronounced protection. Compared with flooded plants without MT, 100 μM MT reduced ROS accumulation and oxidative damage, enhanced antioxidant enzyme activities (POD, APX and CAT), increased osmolyte levels and activities of nitrogen utilisation enzymes (NR, GS and GDH), and partially restored hormone homeostasis, thereby improving seedling growth and physiological stability. The extent of MT-induced tolerance varied among genotypes, indicating genotype-dependent responsiveness under flooding. Overall, foliar application of 100 μM MT is an effective approach to enhance maize seedling flooding tolerance through coordinated regulation of redox balance, osmotic adjustment, nitrogen metabolism and hormonal stability.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147630912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Broad Bed + Mulch and Foliar Nutrition of KNO3 Alleviate Intra-Seasonal Moisture Stress in Rainfed Maize (Zea mays L)","authors":"V. Visha Kumari,&nbsp;N. Jyothi Lakshmi,&nbsp;Savitha Santosh,&nbsp;Priya P. Gaurav,&nbsp;Arun K. Shanker,&nbsp;Sarath Chandran M. A,&nbsp;Bathula Sunitha,&nbsp;Gangaraju Subramanyam,&nbsp;Sakhi N. Singh,&nbsp;Kodigal A. Gopinath,&nbsp;Vinod Kumar Singh","doi":"10.1111/jac.70183","DOIUrl":"10.1111/jac.70183","url":null,"abstract":"<div>\u0000 \u0000 <p>Rainfed maize production is highly vulnerable to intra-seasonal dry spells and moisture stress, which adversely affect physiological functions, microbial activity and yield. Conventional flat bed planting often intensifies stress impacts. However, improved land configurations, such as broad bed with mulch, combined with foliar nutrient sprays may enhance crop resilience and productivity. This study aimed to evaluate the combined effects of land configuration and foliar nutrient sprays on physiological responses, soil microbial activity and yield of maize under intermittent drought stress in rainfed systems. A 2-year field experiment (2023 and 2024) was conducted at ICAR–CRIDA, Hyderabad, India, using a split-plot design with three land configurations (broad bed + mulch, broad bed and flat bed) as main plots and five foliar spray treatments (control, water spray, 1% KNO₃, 2% urea and 0.2% nano urea) as subplots. Moisture stress significantly increased oxidative damage (proline, MDA) in flat bed + control plots, whereas broad bed + mulch minimised stress. Foliar application of 1% KNO₃ consistently improved physiological resilience, reducing canopy temperature and increasing chlorophyll and nitrate reductase activity. Soil microbial activity (DHA, microbial biomass carbon and beneficial microbial populations) was highest under broad bed + mulch, further enhanced by foliar KNO₃. The improved grain yield observed with 1% KNO₃ (4194–5288 kg ha⁻¹) compared to control, with broad bed + mulch yielding the highest cob weight (157.8–200 g) and grains per cob (456–519). Combining broad bed and mulch with foliar nutrition, especially 1% KNO₃, effectively reduces drought stress in rainfed maize by lowering oxidative stress, improving physiological efficiency, increasing microbial activity, and strengthening yield resilience. These integrated practices offer a sustainable strategy to mitigate intra-seasonal drought impacts and enhance productivity in water-limited dryland systems.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147619954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Warming-Induced Phenological Change Regulates Extreme Climate Risk During Winter Wheat (Triticum aestivum L.) Growing Season in the North China Plain","authors":"Yang Han","doi":"10.1111/jac.70181","DOIUrl":"10.1111/jac.70181","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 &lt;p&gt;Clarifying the variation patterns of extreme climate events during crop growing period has important implications for mitigating agricultural disaster risks. However, previous studies have usually relied on fixed crop growing dates, without considering warming-induced phenological responses. Moreover, the large-scale climate driving mechanisms of climate extremes during crop growing period remain inconclusive. In this study, changes in winter wheat phenological phases under long-term climate trends and the associated variations in climate extremes were evaluated. The aim was to investigate whether phenological responses to climate warming could, in turn, regulate extreme climate risks during crop growing period, and to clarify how large-scale climate factors influence extreme climate events in the growing period. The results showed that the anthesis and maturity dates of winter wheat in the North China Plain advanced significantly with climate warmi ng from 1960 to 2020. Once warming-induced phenological changes were considered, the patterns of extreme climate events during the crop growing period differed from those observed across the entire year. From 1960 to 2020, warming reduced the intensity and frequency of pre-anthesis low temperatures but did not intensify post-anthesis high temperature stress. This was ascribed to the significant advancement of the anthesis date, which allowed the reproductive phase to avoid seasonal high temperature events. Nevertheless, this heat avoidance strategy may be unsustainable, as the rate of temperature increase tends to exceed the rate of anthesis advancement. The diurnal temperature range during the winter wheat growing period declined in most regions due to the asymmetric rise between daily minimum and maximum temperatures. Spatially, both pre-anthesis cold and post-anthesis heat stresses were more severe in the northern region than in the south. The pre-anthesis low temperature differences were mainly attributed to climate heterogeneity, whereas post-anthesis high temperature differences were more ascribed to the disparities in anthesis timing. The lower pre-anthesis temperatures in the north resulted in later anthesis than in the south, thereby postponing the maturity phase to a relatively hotter period. Across the North China Plain, winter wheat universally experienced prolonged drought before anthesis, with drought duration in the northern region being twice as long as in the south. The Global Mean Land–Ocean Temperature Index and Arctic Oscillation significantly influenced the frequency and extremes of pre-anthesis low temperatures. Their increasing trends in the continuous time-frequency domain could reduce cold-related risks. Increase in the Western Pacific Index could reduce the post-anthesis high temperature frequency. These findings offer new insights into the role of phenological shifts in modulating extreme climate risks, which are valuable for optimising extreme cl","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147586731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climate-Driven Co-Variability of Wheat (Triticum aestivum) Yields Across Provinces in China","authors":"Yuanyuan Han,&nbsp;Wenyan Guo,&nbsp;Fei Xie","doi":"10.1111/jac.70179","DOIUrl":"10.1111/jac.70179","url":null,"abstract":"<div>\u0000 \u0000 <p>Although numerous studies have examined the influence of meteorological factors on wheat yields across China's principal producing regions, the differential sensitivities of these regions to distinct climatic drivers, the spatial heterogeneity in yield variability, and the systematic mechanisms by which large-scale atmospheric circulation regulates regional climate and thereby indirectly affects wheat production remain insufficiently understood. Drawing upon provincial wheat yield records and ERA5 reanalysis datasets, this study finds that wheat yields in Anhui, Jiangsu and Henan, as well as in Gansu and Shanxi, exhibit consistently high correlations, revealing pronounced characteristics of co-variability. Precipitation, surface temperature and soil moisture are the key meteorological factors driving this co-variability, among which precipitation and temperature exert particularly strong influences in these provinces. Further analyses reveal that precipitation variability in Anhui–Jiangsu–Henan is strongly modulated by the ‘Europe–China (EC) teleconnection pattern’, whereby meridional propagation of mid-latitude Rossby wave trains enhances regional rainfall, favouring water availability during the critical stem-elongation to booting stages of wheat. By contrast, precipitation variability in Gansu–Shanxi is influenced by shifts in the ‘Central Asia–Northeast Dipole pattern (CAN-DP)’. In terms of surface temperature, both regions exhibit a common ‘East Asia Intermediate–High Latitude Dipole Pattern (EAI-DP)’, which is particularly pronounced in winter and spring, reflecting the dominant control of high-latitude trough–ridge systems on East Asian cold-air trajectories.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"212 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147586732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}