Journal of Agronomy and Crop Science最新文献

{"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}

{"title":"Exploring the Impact of a Nontoxic Foliar Fungal Endophyte on Regrowth Post-Defoliation in Tall Fescue (Lolium arundinaceum) Plants","authors":"Andrea C. Ueno,&nbsp;Cecilia Casas,&nbsp;Martín Hourcastagne,&nbsp;Pedro E. Gundel","doi":"10.1111/jac.12715","DOIUrl":"https://doi.org/10.1111/jac.12715","url":null,"abstract":"<div>\u0000 \u0000 <p>Plants employ various strategies to mitigate the impact of herbivory and one such strategy involves the associations with fungal endophytes. Some cool-season forage grasses benefit from protection against herbivores by <i>Epichloë</i> fungal endophytes. However, since the maintenance of symbiosis relies on the plant, costs of hosting endophytes have been also observed. This becomes particularly crucial when forage varieties, inoculated with endophytes that are nontoxic to livestock but still protect host against insect herbivores, experience significant foliage loss (defoliation). We investigated the impact of a nontoxic <i>Epichloë</i> endophyte on the responses of tall fescue plants to defoliation across two morphotype varieties, Continental and Mediterranean, and different seasonal contexts. Under specific defoliation treatments, endophyte-symbiotic plants showed reduced postdefoliation recovery, indicating the costs of hosting the endophyte for host plants. However, these conditions were not the most severe for plant growth. Regardless of the endophyte's presence, plants from Continental morphotype exhibited superior recovery than those from Mediterranean morphotype, an effect that was more pronounced in summer. Notably, the endophyte promoted plant growth after defoliation in winter for both morphotypes. Our study offers insights into mitigating endophyte-associated costs on plant recovery postdefoliation by strategically managing cutting intensity and frequency, considering the seasonal variation.</p>\u0000 </div>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141308806","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":"Cover page","authors":"","doi":"10.1111/jac.12708","DOIUrl":"https://doi.org/10.1111/jac.12708","url":null,"abstract":"<p>The cover image is based on the Original Article <i>Biomass production of 14 accessions of cactus pear (Opuntia spp.) under semi-arid land conditions</i> by Dhurba Neupane et al., https://doi.org/10.1111/jac.12705.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jac.12708","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140881032","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":"Drought response modelling of leaf photosynthetic parameters in two Gossypium species","authors":"Daryl R. Chastain,&nbsp;John L. Snider,&nbsp;Bhupinder Singh,&nbsp;Gurpreet Virk","doi":"10.1111/jac.12709","DOIUrl":"https://doi.org/10.1111/jac.12709","url":null,"abstract":"<p>Cotton is well adapted to dry areas, but progressive water deficits can lead to declines in net photosynthesis (A), ultimately reducing yield. However, the exact mechanism responsible for this decline in net photosynthesis (stomatal or non-stomatal) is not fully understood under field conditions, partially due to limitations in the ability to collect critical data. To our knowledge, no other study has compared the drought responses of Pima and upland cotton using both CO₂ response and chlorophyll fluorescence under field conditions. To this end, a field study was conducted to quantify the impact of progressive mild drought, as measured by midday stomatal conductance to water vapour (<i>g</i>_s), on cotton leaf metabolism in Pima and upland cotton. Survey gas exchange and rapid photosynthetic CO₂ response (RACiR) were conducted during flowering on the same leaf. The study observed decline in A as <i>g</i>_s declined for both species. Correlation analysis indicated typical relationships with A and parameters associated with stomatal limitations such as decreased CO₂ inside the leaf and at the site of carboxylation; however, it was found that while Pima exhibited a strong relationship between maximum electron transport rate (<i>J</i>_max) and electron transport rate (ETR), upland cotton did not. Furthermore, when ETR is broken down into proportions contributing to net photosynthesis and photorespiration (ETR_A, ETR_P, respectively), we found that a greater proportion of ETR is being shuttled to the photorespiratory pathway in upland, relative to Pima as <i>g</i>_s decreases. Our results fill critical knowledge gaps that can be useful for modellers and breeders when preparing for future climate change scenarios.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jac.12709","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140814281","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":"Adjustments of flower opening time and duration in tropical rice (Oryza sativa ssp. indica) landraces in response to heat stress","authors":"Debal Deb,&nbsp;Ayan Paul,&nbsp;Sabyasachi Bhattacharya","doi":"10.1111/jac.12706","DOIUrl":"https://doi.org/10.1111/jac.12706","url":null,"abstract":"<p>Based on our primary database of the flower opening time (FOT) and flower exposure duration (FED) of 1114 rice (<i>Oryza sativa</i> ssp. <i>indica</i>) landraces, we examined the influences of growing season, sunrise time as well as day maximum and minimum temperatures on the anthesis behaviour of <i>indica</i> rice landraces of South and Southeast Asia, flowering in summer and winter in 3 consecutive years (2020–2022). We also compared the FOT and FED on sunny and cloudy days of a small set of landraces, and also during summer and winter. Our data show that rice florets tend to open later in the morning and lengthen the sunrise-to-anthesis duration (SAD) on hotter sunny days during tropical summer than during winter and on cloudy days. These findings contradict the widely held conjecture, based on studies conducted at colder latitudes, that rice flowers open earlier in the morning to avoid heat stress. We propose that <i>indica</i> rice landraces are sufficiently adapted to tropical summer because they were selected and bred over millennia to withstand heat stress during tropical summer, so their FOT and SAD are weakly influenced by high day temperatures. However, the significant reduction in FED of these landraces, whose flowers open later in mid-day, seems to be an adaptive mechanism to avoid longer exposure to rising air temperature approaching day maximum temperature.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140808017","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-induced fertility loss in summer maize (Zea mays L.): Quantitative analysis of contributions from developmental and physiological damage to pollen","authors":"Huiqin Wang,&nbsp;Jing Sun,&nbsp;Hao Ren,&nbsp;Bin Zhao,&nbsp;Jiwang Zhang,&nbsp;Baizhao Ren,&nbsp;Peng Liu","doi":"10.1111/jac.12710","DOIUrl":"https://doi.org/10.1111/jac.12710","url":null,"abstract":"<p>In recent years, the frequency and intensity of exposure to heat stress have increased gradually, seriously hampering the production of maize. This paper presents a study designed to analyze how the development, physiology and dispersal of pollen from the heat-resistant maize variety Zhengdan958 and the heat-sensitive maize variety Xianyu335 are affected by exposure to heat stress during the tasselling stage. Our results showed That exposure to heat stress significantly increased the antioxidant enzyme activity in pollen. Upon visual inspection of the pollen, we found that the lower water content had given rise to wrinkles in the pollen surface, sunken germination pores, and morphological deformations. In addition, the anther dehiscence process was hindered, resulting in a reduced amount of pollen being dispersed. We also found elevated levels of abscisic acid (ABA), jasmonic acid (JA) and its derivatives, indole acetic acid (IAA) and gibberellin-3 (GA₃) in heat-pollens, as well as elevated ratios of IAA to ABA and ABA to GA₃. Ultimately impaired pollen fertility. Summarizing, our experiment revealed that reduced pollen quantity and quality are significant contributors to fertility losses in summer maize exposed to heat stress at anthesis, and we hope that our analysis of the physiological mechanisms involved can contribute to the development of crop management measures aimed at countering the increasingly detrimental effects of heat stress on the production of summer maize.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140641854","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":"Environmental drivers of wheat yield variability across China's production regions: Insights from field experiments","authors":"Dongxiao Zheng,&nbsp;Yang Zhou,&nbsp;Matthew Tom Harrison,&nbsp;Meixue Zhou,&nbsp;Dongliang Xiong,&nbsp;Nanyan Deng,&nbsp;Fei Wang,&nbsp;Xiaoxia Ling,&nbsp;Lixiao Nie,&nbsp;Jianliang Huang,&nbsp;Shaobing Peng,&nbsp;Ke Liu,&nbsp;Jianguo Man","doi":"10.1111/jac.12701","DOIUrl":"https://doi.org/10.1111/jac.12701","url":null,"abstract":"<p>Wheat crops underpin contemporary global food security. Predominant wheat production zones in China include the Huang-Huai-Hai-Plain and the Mid-Lower Reaches of the Yangtze River, although climatic effects on productive potential across these regions vary markedly in space and time. Here, we conducted field experiments during the wheat season of 2015–2018 to examine environmental effects on growth, with fertilization and irrigation provided at levels ensuring that nutrient and water stress exposure was minimal. Yields in Huang-Huai-Hai-Plain and the Mid-Lower Reaches of the Yangtze River averaged 8950 and 4818 kg ha⁻¹, respectively. Yield variation across regions was primarily related to spike number per unit area and grain number per spike. Maturity biomass was higher in Huang-Huai-Hai-Plain; this translated into higher grain yields. Lower temperature and longer growing duration between emergence and jointing in Huang-Huai-Hai-Plain afforded higher tillering and spike numbers, whereas higher growth rates from jointing to maturity resulted in higher biomass production in Huang-Huai-Hai-Plain compare with the Mid-Lower Reaches of Yangtze River. Growth rate, grain numbers and yield were positively correlated with the ratio of daily intercepted solar radiation to mean temperature during jointing to anthesis, termed photothermal quotient. Collectively, our results suggest that growth rate accounted for more variation in biomass production compared with growth duration, and the photothermal conditions in the Mid-Lower Reaches of the Yangtze River were restrictive for spike development and yield formation. Our results help disentangle drivers of crop growth through the development of agro-environmental conceptual frameworks, enabling a better understanding of yield variability in space and time.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140329076","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":"Halo-hydromorphism alters nitrogen fertilization responses of tall wheatgrass pastures: Capture and use of resources, tiller dynamics and forage production","authors":"Federico Fina,&nbsp;Nicolás Bertram,&nbsp;María Laura Gatti,&nbsp;Carla E. Di Bella,&nbsp;Agustín A. Grimoldi,&nbsp;Germán D. Berone","doi":"10.1111/jac.12698","DOIUrl":"10.1111/jac.12698","url":null,"abstract":"<p>Halo-hydromorphism limits productivity in approximately 100 million hectares worldwide. Tall wheatgrass (<i>Thinopyrum ponticum</i>) is a species widely used in these environments for its seeding potential, being the addition of nitrogen a considered technological tool to increase forage quality and production. The objective of the study was to determine the impact of nitrogen fertilization on the capture and use of resources (radiation, water and nitrogen) in a cool season perennial sward growing in contrasting halo-hydromorphic conditions. Cultivated pastures from three independent sites were used. Sites were described according to the degree of halo-hydromorphism using soil salinity and water table attributes (salinity and depth) as environmental indicators: <i>low HHM</i> site [electrical conductivity (EC_1:2.5) 0.97 dS/m; water table salinity 2.03 dS/m; depth 85 cm], <i>intermediate HHM</i> site (EC_1:2.5 3.86 dS/m; water table salinity 7.40 dS/m; depth 134 cm) and <i>high HHM site</i> (EC_1:2.5 4.49 dS/m; water table salinity 7.85 dS/m; depth 31 cm). At each site, a late spring regrowth (~750°Cd) was studied by applying two treatments (<i>n</i> = 5): without (N0) and nitrogen fertilization (N150; 150 kg/ha of nitrogen in the form of urea). The response of tall wheatgrass to nitrogen fertilization in halo-hydromorphic conditions depends on soil salinity and water table attributes. N150 treatments production was twice as high as in N0 in <i>low HHM</i> and <i>intermediate HHM</i> environments (from 1750 to 3500 kgDM/ha and from 1080 to 1985 kgDM/ha, respectively). Meanwhile, in <i>high HHM</i> conditions, forage production was only 40% higher when nitrogen was added (from 625 to 870 kgDM/ha). In <i>low HHM</i> the higher N150 production was related to tiller density and size, whereas in <i>intermediate HHM</i> and <i>high HHM</i> was linked only to tiller size. In N150 treatments, the nitrogen nutrition index was negatively affected with the increase in HHM conditions (0.77, 0.62 and 0.55 for <i>low HHM</i>, <i>intermediate HHM</i> and <i>high HHM</i>, respectively). Instead, nitrogen nutrition index of N0 was similar in all the environments (~0.42). In N150, forage production capacity analysed in terms of radiation and water use efficiency (RUE and WUE, respectively) was similar in <i>low HHM</i> and <i>intermediate HHM</i> environments (RUE ~0.81 gDM/Mj and WUE ~13 kgDM/mm). These findings emphasize the importance of conducting analyses based on resource use and capture to understand productive responses to the increase in growth-limiting factors. Furthermore, they contribute to the identification of environments suitable for nitrogen fertilization.</p>","PeriodicalId":14864,"journal":{"name":"Journal of Agronomy and Crop Science","volume":"210 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140322099","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}