Journal of Agronomy and Crop Science最新文献

{"title":"Analysis of Carbon Flux Characteristics in Saline–Alkali Soil Under Global Warming","authors":"Qiu Haonan,&nbsp;Yang Shihong,&nbsp;Wang Guangmei,&nbsp;Liu Xiaoling,&nbsp;Zhang Jie,&nbsp;Xu Yi,&nbsp;Dong Shide,&nbsp;Liu Hanwen,&nbsp;Jiang Zewei","doi":"10.1111/jac.12720","DOIUrl":"https://doi.org/10.1111/jac.12720","url":null,"abstract":"<div>\u0000 \u0000 <p>The carbon cycle of saline–alkali ecosystems will be affected to some extent in the context of future global warming. Therefore, we investigated the net ecosystem exchange (NEE) of three typical crops (wheat, maize and soybean) in the saline–alkaline land of the Yellow River Delta. To further investigate CO₂ fluxes, NEE was decomposed into gross primary productivity (GPP) and ecosystem respiration (Re). In terms of seasonal variation, wheat and soybean were carbon sources in the early and late growth periods, and carbon sinks in the rest of the period, whereas maize was a carbon sink in the majority of the period, and maize had good carbon sink potential. The cumulative NEE during the growth periods for wheat, maize, and soybean were 414.86, 258.24 and 228.92 g cm⁻², respectively, and the daily variation showed that the peak NEE values for the three crops preceded the peak values of both GPP and ecosystem respiration, occurring approximately at 12:00 a.m. In the correlation analysis, NEE and GPP of the three crops were well correlated with photosynthetic photon flux density and net radiation, whereas Re was significantly correlated with air temperature. Through a comparative analysis of CO₂ fluxes within various agricultural ecosystems, our findings indicated that wheat demonstrated moderate carbon sequestration capabilities, whereas maize and soybean exhibited strong carbon sink characteristics. Notably, saline–alkali crops exhibited lower Re, whereas GPP levels remained at a moderate range. Therefore, under the global warming trend, the respiration of saline crops and soils will be affected and may change the original carbon sink into a carbon source. Hence, implementing suitable measures targeting saline–alkali areas, such as the establishment of an effective crop rotation system and the enhance saline–alkali land conditions, can reduce emissions of greenhouse gases, thus reducing the pressure of global warming and maintaining a stable carbon cycle in saline–alkali land.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141487916","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":"Multigenerational Effects of Elevated CO2 and N Supply on Leaf Gas Exchange Traits in Wheat Plants","authors":"Xizi Wang,&nbsp;Eva Rosenqvist,&nbsp;Yuzheng Zong,&nbsp;Xiangnan Li,&nbsp;Fulai Liu","doi":"10.1111/jac.12722","DOIUrl":"https://doi.org/10.1111/jac.12722","url":null,"abstract":"<p>The responses of leaf gas exchange of wheat (<i>Triticum aestivum</i> L.) to elevated atmospheric CO₂ concentration (<i>e</i>[CO₂]) were often investigated within a single generation, while the long-term acclimation of photosynthesis to growth in <i>e</i>[CO₂] over multiple generations has not been systematically studied. Here, five wheat cultivars were grown under either ambient (<i>a</i>[CO₂], 400 ppm) or elevated (<i>e</i>[CO₂], 800 ppm) CO₂ concentration for three consecutive generations (G1 to G3) with two N-fertilisation levels (1N–1 g N pot⁻¹ and 2N–2 g N pot⁻¹) in climate-controlled greenhouses. Leaf gas exchange was determined in each generation of plants under different treatments. It was found that at both N levels, <i>e</i>[CO₂] stimulated photosynthetic rate while reducing stomatal conductance, transpiration rate and leaf N concentration, resulting in an enhanced water use efficiency and photosynthetic N use efficiency. The N level modulated the intergenerational responses of photosynthetic capacity to <i>e</i>[CO₂]; under low N supply, the maximum carboxylation rate (<i>V</i>_cmax), the maximum electron transport rate (<i>J</i>_max) and the rate of triose phosphate utilisation (TPU) were significantly downregulated by <i>e</i>[CO₂] from the first to the second generation, but recovered in the third generation; whereas at high N levels, photosynthetic acclimation was diminished with the progress of generations, with <i>V</i>_cmax, <i>J</i>_max and TPU increased under <i>e</i>[CO₂] in the third generation. These results suggest that intergenerational adaptation could alleviate the <i>e</i>[CO₂]-induced reduction of the photosynthetic capacity, but plants with different N status responded differently to adapt to the long-term exposure to <i>e</i>[CO₂]. Among the five cultivars, 325Jimai showed a better photosynthetic performance under <i>e</i>[CO₂] over the three generations, while 02-1Shiluan appeared to be more inhibited by CO₂ elevation in the long term conditions. These findings provide new insights for breeding strategies in the future CO₂-enriched environments.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jac.12722","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141487920","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":"Effects of Semi-Film and Full-Film Mulching on Soybean Growth, Biological Nitrogen Fixation and Grain Yield","authors":"Shuyue Wen,&nbsp;Pengfei Dang,&nbsp;Dexiao Li,&nbsp;Xiaoliang Qin,&nbsp;Kadambot H. M. Siddique","doi":"10.1111/jac.12724","DOIUrl":"10.1111/jac.12724","url":null,"abstract":"<div>\u0000 \u0000 <p>Soybean film mulching has shown promise in maintaining consistent and high yields in semi-arid regions. However, the specific impacts of full-film and semi-film mulching on soybean growth, root nodule traits and grain yield are poorly understood. This 2-year study (2021–2022) investigates the effects of full-film and semi-film mulching on soil moisture, soybean growth and yield. Our findings revealed that semi-film mulching increased soybean yield by 18.12% compared to full-film mulching, averaged across 2 years. Furthermore, the semi-film treatment significantly enhanced biological nitrogen fixation ability, increasing root nodule numbers by 24.81%–33.43%, compared to full-film mulching. This improvement also positively affected soybean quality, with crude protein content increasing by 5.89% in 2021 and 4.14% in 2022 compared to full-filming. Moreover, semi-film mulching helped maintain soil moisture and temperature during later soybean growth stages. There findings suggest that semi-film mulching is a viable agricultural strategy for soybean cultivation in semi-arid regions, improving soybean quality and efficiency while promoting environmental sustainability.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462325","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":"Severe Preharvest Drought Elevates Respiration and Storage Rot in Postharvest Sugarbeet Roots","authors":"Abbas M. Lafta,&nbsp;John D. Eide,&nbsp;Mohamed F. R. Khan,&nbsp;Fernando L. Finger,&nbsp;Karen K. Fugate","doi":"10.1111/jac.12718","DOIUrl":"10.1111/jac.12718","url":null,"abstract":"<p>Sugarbeets are largely produced without irrigation, making drought stress inevitable when rainfall is insufficient. Whether drought stress impacts root storage, however, is currently unknown. Research was conducted to determine the effect of preharvest water stress on postharvest sugarbeet root respiration rate and susceptibility to storage rots as these traits are the primary determinants for sucrose loss and quality deterioration. Greenhouse-grown plants were subjected to four levels of water deficit by discontinuing watering for 0, 7, 14 or 21 days prior to harvest. Plants receiving water-restrictive treatments displayed physiological stress by leaf epinasty, reductions in net photosynthetic rate and leaf relative water content and increases in leaf temperature, whereas the water content of roots harvested from these plants progressively decreased with the severity of the preharvest water-deficit treatment. Harvested roots from all watering treatments were stored at 10°C and 95% relative humidity for up to 12 weeks and evaluated for respiration rate and susceptibility to storage rot. Root respiration rate during storage was inversely related to root water content at harvest by second-order equations, such that respiration was not significantly affected by minor reductions in root water content but increased exponentially for roots obtained from severely drought-stressed plants with water contents at harvest of ≤75%. Similarly, roots with water contents ≤75% had elevated levels of electrolyte leakage, a measure of cellular membrane damage, and were more susceptible to dehydration and fungal infection during storage. In separate experiments, roots harvested from water-stressed plants were inoculated with <i>Botrytis cinerea</i> or <i>Penicillium vulpinum</i>, two causal agents for storage rots. In these experiments, preharvest water stress quantitatively increased root rot and qualitatively altered symptoms of their infection. Overall, these results demonstrate that severe preharvest drought stress is likely to significantly increase sugarbeet root storage losses caused by root respiration and storage rots and that storage losses are likely to accelerate with time in storage. However, mild-to-moderate drought conditions prior to harvest are expected to have no or minimal effect on storage losses from root respiration or storage rots.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jac.12718","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141452788","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":"Diurnal and Seasonal Variations of Water Use Efficiency of Rice–Wheat Rotation Cropland in the Jianghuai River Basin of China","authors":"Xiaohan Zhao,&nbsp;Fangmin Zhang,&nbsp;Shengheng Weng,&nbsp;Chunfeng Duan,&nbsp;Yanyu Lu","doi":"10.1111/jac.12719","DOIUrl":"10.1111/jac.12719","url":null,"abstract":"<div>\u0000 \u0000 <p>Rice–wheat rotation cropland is one of the most important agroecosystems in South China, the escalation of conflict between food demand augment and water supply shortage increased with climate change. Water use efficiency plays a more significant role in optimising water and carbon management. Thus, the diurnal and seasonal variations of water use efficiency were assessed by the 3-year eddy covariance observations in the Shouxian National Observatory, a typical rice–wheat rotation station. The results revealed a ‘U’-shaped diurnal pattern of water use efficiency for winter wheat (<i>Triticum aestivum</i> L.) and rice (<i>Oryza sativa</i> L.). Seasonal water use efficiency had two peaks with the highest in the winter wheat-growing season. The average water use efficiency for the rice–wheat rotation cropland was 2.85 g C kg⁻¹ H₂O over the whole year with 2.62 and 3.11 g C kg⁻¹ H₂O for winter wheat and rice, respectively. However, gross primary productivity and evapotranspiration of rice were higher than those of winter wheat. Temperature, photosynthetically active radiation were the principal impact factors of water use efficiency in the rice-growing season. Comparatively, soil water and vapour pressure deficit dominated the water use efficiency changes in the winter wheat-growing season. Our analyses can help understand the water use requirements for carbon assimilation on rice–wheat rotation cropland on the field scale.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141452787","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":"Heat Stress Resulting From Late Sowing Impairs Grain Yield and Quality of Quinoa Genotypes Facing Drought and Salt Stress Under Field Conditions","authors":"Ghulam Abbas,&nbsp;Behzad Murtaza,&nbsp;Muhammad Amjad,&nbsp;Muhammad Saqib,&nbsp;Muhammad Akram,&nbsp;Muhammad Asif Naeem,&nbsp;Ghulam Mustafa Shah,&nbsp;Mohsin Raza,&nbsp;Qasim Ali,&nbsp;Khalil Ahmed","doi":"10.1111/jac.12717","DOIUrl":"10.1111/jac.12717","url":null,"abstract":"<div>\u0000 \u0000 <p>Climate change is causing drastic reduction in crop yields around the globe due to increase in soil salinity, drought and heat stress. Quinoa (<i>Chenopodium quinoa</i> Willd) is regarded as a very significant food security crop considering the climate change scenario. Two quinoa genotypes (Puno and Titicaca) were cultivated on salt affected soil under drought stress with different sowing dates. Compared with early sowing, late sowing combined with salinity and drought stress caused drastic decline in plant growth and grain yield due to imposition of heat stress. Plant biomass and grain yield decreased by 26% and 39% in Puno, and by 34% and 49% in Titicaca under late sowing accompanied by salt and drought stress. Relative water contents and stomatal conductance of leaves declined in the same trend in both genotypes. Shoot Na⁺ concentration was the highest whereas K⁺ concentration was the lowest in both genotypes when drought and salt stress were combined under late sowing. Grain minerals (Ca, Mg, Fe, Zn, Cu, K, P, N and Mn) and dietary contents (protein, lipids, carbohydrates and fibre) were decreased more under the combination of salinity and drought for late sowing as compared to early sowing. When salinity and drought stress were combined under late sowing, the contents of H₂O₂ and TBARS were 1.9 and 2.2-fold higher in Puno and 2.4 and 2.6-fold higher in Titicaca, respectively. The oxidative stress was mitigated by enhanced activities of antioxidant enzymes (CAT, SOD and POD) more in Puno than Titicaca. Plant biomass and grain yield were higher in Puno with better grain quality than Titicaca. Hence, this genotype should be cultivated on salt affected soils facing drought and high temperatures.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141461794","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":"Optimising Sowing Window for Wheat Cultivars Under RCP 4.5 and RCP 6.0 Scenarios During the 21st Century in Indian Punjab","authors":"Prabhjyot-Kaur,&nbsp;Sandeep Singh Sandhu,&nbsp;Shivani Kothiyal","doi":"10.1111/jac.12711","DOIUrl":"https://doi.org/10.1111/jac.12711","url":null,"abstract":"<div>\u0000 \u0000 <p>A simulation study was conducted for assessing the climate change impact on wheat cultivars (HD2967 and PBW725) under RCP 4.5 and RCP 6.0 scenarios for four agroclimatic zones (AZ) of Punjab. The yield trend during 70 years (2025–95) using the CERES-Wheat model was assessed for different sowing windows (end October to end November). The maximum/minimum temperature and rainfall, respectively, during the season varied between 25–27°C/9–12°C and 27–103 mm (AZ II), 24–27°C/8–13°C and 37–105 mm (AZ III), 24–26°C/9–12°C and 20–80 mm (AZ IV) and 23–26°C/9–12°C and 30–71 mm (AZ V). The climatic conditions largely vary across the state, because of which only AZs II, III and V were found productive for wheat crop with most of the years lying in the high yield (&gt;5000 kg/ha) category. The sowing of HD2967 during mid to end November would be suitable adaptation strategy for wheat growers in the state.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439719","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":"Genome-Wide Identification of CLE Gene Family and Function Analysis of SbCLE39 Under Salt Stress in Sorghum","authors":"Zengting Chen,&nbsp;Yanling Zhang,&nbsp;Xin Xue,&nbsp;Haowei Tian,&nbsp;Ying Kong,&nbsp;Guocheng Ren","doi":"10.1111/jac.12714","DOIUrl":"https://doi.org/10.1111/jac.12714","url":null,"abstract":"<div>\u0000 \u0000 <p>CLE proteins are a class of signalling factors involved in plant growth and abiotic stress response. They play crucial roles in processes such as cell differentiation, chlorophyll synthesis and abscisic acid (ABA) signal transduction. However, the function of the <i>CLE</i> genes in <i>Sorghum bicolor</i> remains unclear. In this study, 42 sorghum <i>CLE</i> genes were identified, and their evolutionary relationship, gene structure, amino acid sequence and homologous genes were analysed. We also examined the expression levels of <i>CLE</i> genes under various treatment conditions. Transcriptome data showed that there were significant differences in the expression patterns of 42 <i>CLE</i> genes in different tissues and organs. It is worth noting that <i>SbCLE39</i> is mainly highly expressed in sorghum roots. At the same time, the expression of <i>SbCLE39</i> decreased significantly under salt and ABA treatment. Compared with wild-type yeast cells (EV), yeast cells with high expression of <i>SbCLE39</i> had lower tolerance to salt stress. In addition, the excessive accumulation of ABA caused by external application of SbCLE39p reduced the salt tolerance of sorghum. These findings suggest that <i>SbCLE39</i> negatively regulates the salt tolerance of sorghum. These results lay a foundation for revealing the mechanism of <i>CLE</i> genes regulating the salt tolerance of sorghum and are of great significance for the cultivation of salt-tolerant crops.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141425068","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":"Short-Term Soil Waterlogging Improves Cotton Tolerance to High Temperature by Triggering Antioxidant Defence System in Cotton Seedlings","authors":"Haimiao Wang,&nbsp;Li Huang,&nbsp;Pan Yang,&nbsp;Xianghua Zeng,&nbsp;Yuli Huang,&nbsp;Wenting Yuan,&nbsp;Yixuan Kou,&nbsp;Zhiyong Zhang","doi":"10.1111/jac.12713","DOIUrl":"https://doi.org/10.1111/jac.12713","url":null,"abstract":"<div>\u0000 \u0000 <p>Soil waterlogging and high temperature (HT) are serious abiotic stresses that negatively affect cotton growth and yield. Yet effects of prewaterlogging to HT subsequently in cotton seedlings have not been obtained. To address this, two temperature conditions (30/20°C and 35/25°C) and two soil waterlogging levels (0 and 3 days) were established during the cotton seedling stage. Results showed that indexes of plant performance were decreased markedly under HT. Unexpectedly, plant performance for the treatment of HT combined with 3 days of soil waterlogging (HW) was better than HT treatment (specifically, increase of 7.9%, 9.0%, 10.2%, 5.4% and 4.6% in leaf area, plant height, belowground biomass, aboveground biomass and root-to-shoot ratio was detected). Decreases in MDA (malondialdehyde), H₂O₂ (hydrogen peroxide) contents and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>O</mi>\u0000 <mn>2</mn>\u0000 <mo>−</mo>\u0000 </msubsup>\u0000 </mrow>\u0000 <annotation>$$ {mathrm{O}}_2^{-} $$</annotation>\u0000 </semantics></math> (superoxide radicals) generation rate under HW treatment were observed by 14.1%, 7.7% and 14.1%, respectively, compared with HT. Moreover, ASA (ascorbic acid) content and DHAR (dehydroascorbate reductase) activity were improved by 19.7% and 13.8% for HW treatment relative to HT, however, the opposite situation for activities of APX (ascorbate peroxidase) and GR (glutathione reductase). Besides, activities of SOD (superoxide dismutase), CAT (catalase) and POD (peroxidase) in HW treatment were increased by 16.7%, 8.3% and 18.4%, separately. Thus, we concluded that short-term soil waterlogging improved cotton cross-tolerance to the continued high-HT stress by enhanced SOD, CAT, POD and DHAR activities, increased ASA content in cotton seedlings. These results were expected to provide a theoretical basis for understanding cotton's cross-tolerance to abiotic stress.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141425069","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":"Evaluating Water Stress Adaptation in Cotton: Multivariate Analysis in F6–F7 Generations for Yield, Fibre Quality and Variety Selection","authors":"Hatice Kübra Gören,&nbsp;Öner Canavar,&nbsp;Uğur Tan","doi":"10.1111/jac.12716","DOIUrl":"https://doi.org/10.1111/jac.12716","url":null,"abstract":"<p>The impact of drought stress on productivity of cotton (<i>Gossypium hirsutum</i> L.) is a well-known challenge in agricultural production, and concurrently, the question of whether using the same or different selection criteria in well-watered and water-deficit conditions to select drought-tolerant cotton varieties remains unclear. This study aimed to comprehensively assess the single plant progeny lines within the F6 and F7 generations for determine response to DS and select the tolerant lines within the F7 generation. Single plant progeny rows were established, with the deficit water condition comprising 108 and 136 single plants for the F6 and F7 generations, respectively, and the WW condition consisting of 120 and 156 single plants for the F6 and F7 generations, respectively, with four blocks in Augmented experimental design. These progeny rows have length of 12 m, incorporate five control varieties (Karizma, Gloria, Carla, Candia and Claudia) to facilitate a comprehensive comparison. The study findings showed that fibre length, boll number and lint percentage were identified as the most crucial selection criteria under both WW and deficit irrigation conditions through principal component analysis. These indicators are highly beneficial for evaluating cotton's drought tolerance and screening potential drought-tolerant lines under both irrigation scenarios. According to the decision tree analysis, FL and BN have emerged as the most critical decision-making parameter in both irrigation conditions. Furthermore, the analysis revealed that each selection criterion has different impact in the comprehensive selection process. Also, as a result of all statistical analysis results and breeder observations, a total of 10 cotton lines were selected in the F7 generation. These selected genotypes hold promise for future cotton breeding programmes, providing an avenue to enhance drought tolerance and elevate cotton yield and productivity.</p><p><b>Clinical Trial Registration:</b> This study does not involve a clinical trial, and therefore, clinical trial registration is not applicable.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141425078","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}