Moderate intermittent water deficit enhances dry matter remobilization, nitrogen uptake, and water and nitrogen use efficiency in winter wheat

Agriculture Communications Pub Date : 2025-07-25 DOI:10.1016/j.agrcom.2025.100098

Chen Ru , Yuxuan Liu , Wene Wang , Xiaotao Hu

{"title":"Moderate intermittent water deficit enhances dry matter remobilization, nitrogen uptake, and water and nitrogen use efficiency in winter wheat","authors":"Chen Ru , Yuxuan Liu , Wene Wang , Xiaotao Hu","doi":"10.1016/j.agrcom.2025.100098","DOIUrl":null,"url":null,"abstract":"<div><div>Drought stress severely inhibits the growth and production of winter wheat, particularly after anthesis. To mitigate these effects, this study evaluated the impact of intermittent water deficit priming on physiological and yield-related traits of winter wheat under subsequent drought stress, based on a two-year experiment. Intermittent moderate water deficit priming (PID2) significantly increased photosynthetic rate (P<sub>n</sub>) and stomatal conductance, resulting in higher dry matter accumulation and relative growth rate. Moreover, compared to non-primed plants, PID2 improved dry matter translocation efficiency and its contribution to grain by 42.3 % and 23.0 %, respectively, thereby increasing yield by 27.1 %. Additionally, PID2 and persistent mild water deficit priming (PPD1) improved root distribution in the middle and lower soil layers, enhancing nitrogen uptake, as well as grain nitrogen and protein accumulation. Nitrogen use efficiency for yield under PID2 and PPD1 treatments increased by 12.5 % and 12.2 %, respectively, compared to non-primed plants. The TOPSIS assessment indicated that PID2 enhanced drought tolerance in wheat most effectively, making it a promising water management strategy for mitigating post-anthesis stress.</div></div>","PeriodicalId":100065,"journal":{"name":"Agriculture Communications","volume":"3 3","pages":"Article 100098"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agriculture Communications","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2949798125000286","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Drought stress severely inhibits the growth and production of winter wheat, particularly after anthesis. To mitigate these effects, this study evaluated the impact of intermittent water deficit priming on physiological and yield-related traits of winter wheat under subsequent drought stress, based on a two-year experiment. Intermittent moderate water deficit priming (PID2) significantly increased photosynthetic rate (P_n) and stomatal conductance, resulting in higher dry matter accumulation and relative growth rate. Moreover, compared to non-primed plants, PID2 improved dry matter translocation efficiency and its contribution to grain by 42.3 % and 23.0 %, respectively, thereby increasing yield by 27.1 %. Additionally, PID2 and persistent mild water deficit priming (PPD1) improved root distribution in the middle and lower soil layers, enhancing nitrogen uptake, as well as grain nitrogen and protein accumulation. Nitrogen use efficiency for yield under PID2 and PPD1 treatments increased by 12.5 % and 12.2 %, respectively, compared to non-primed plants. The TOPSIS assessment indicated that PID2 enhanced drought tolerance in wheat most effectively, making it a promising water management strategy for mitigating post-anthesis stress.

查看原文本刊更多论文

适度的间断性水分亏缺提高了冬小麦干物质再动员、氮素吸收和水氮利用效率

干旱胁迫严重抑制冬小麦的生长和产量，特别是在花期后。为了减轻这些影响，本研究基于一项为期两年的试验，评估了干旱胁迫下间歇性水分亏缺启动对冬小麦生理和产量相关性状的影响。间歇中度亏水处理（PID2）显著提高了叶片光合速率（Pn）和气孔导度，提高了叶片干物质积累和相对生长速率。与未处理的植株相比，PID2处理的干物质转运效率和对籽粒的贡献分别提高了42.3%和23.0%，产量提高了27.1%。此外，PID2和持续轻度水分亏缺启动（PPD1）改善了中下层土壤根系分布，提高了氮素吸收、籽粒氮素和蛋白质积累。与未处理相比，PID2和PPD1处理对产量的氮素利用效率分别提高了12.5%和12.2%。TOPSIS评价结果表明，PID2对小麦抗旱性的提高最为有效，是一种很有前景的缓解花后胁迫的水分管理策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Agriculture Communications

自引率

0.00%

发文量