A synergistic water-saving strategy combining stage-specific irrigation and application of exogenous thiamine enhances drought resistance of Xinjiang cotton

IF 3.9 2区农林科学 Q1 AGRONOMY

Plant and Soil Pub Date : 2025-04-07 DOI:10.1007/s11104-025-07442-2

Fuxiang Zhao, Linjie Xia, Simin Sun, Hang Li, Yuxuan Rong, Yuxin Wang, Xuwen Wang, Xianhui Kong, Longfu Zhu, Xianlong Zhang, Yu Yu, Xiyan Yang

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引用次数: 0

Abstract

Background and aims

Xinjiang is the largest cotton planting area in China. However, the perennial water shortage in Xinjiang restricts the development of the cotton industry, making drought one of the important limiting factors. The aim of this study was to evaluate the effectiveness of water-saving scheme and thiamine (Thi) application on alleviating the adverse effects of drought stress on the growth and development of cotton.

Methods

In this study, five Xinjiang-released cotton varieties (Jinken1775, Jinken1565, Huamian702, Zhongmian979, and Jinfeng2) were selected as the research object, and Xinluzao8 served as the drought-sensitive control. Comprehensive drought resistance index (D) of the drought resistance coefficient (DRC) of four yield and four quality traits were used to evaluate the drought resistant ability of the six cotton varieties under different water conditions and Thi spraying conditions.

Results

The stage-specific irrigation strategy (60% during vegetative vs. 90% during the flowering and boll stage) concurrently maintained higher drought resistance across cultivars, with Jinken1565 exhibited the highest drought resistance. This scheme reduced irrigation by 26% while sustaining fiber quality. Exogenous 50 mM Thi further enhanced drought tolerance, reducing transpiration rate by 33% and blade damage by 55%. These results demonstrate that stage-specific water management optimizes drought adaptation in cotton cultivation under drought conditions.

Conclusions

Our study suggests that a 26% water-saving scheme was proposed for most drought-resistant varieties planted in Xinjiang, and an appropriate scheme to achieve stable yield by Thi application during the early drought condition was proposed for varieties with low drought resistant ability.

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分阶段灌溉与外源硫胺素施用相结合的协同节水策略提高了新疆棉花的抗旱性

背景与目的新疆是中国最大的棉花种植区。但新疆长期缺水制约着棉花产业的发展，干旱是重要的制约因素之一。本研究旨在评价节水方案和硫胺素（Thi）在缓解干旱胁迫对棉花生长发育不利影响方面的效果。方法以5个新疆棉花品种（金垦1775、金垦1565、花棉702、中棉979、金丰2号）为研究对象，以新陆早8号为干旱敏感对照。利用4个产量性状和4个品质性状的抗旱系数（DRC）的综合抗旱指数(D)，评价了6个棉花品种在不同水分条件和喷施条件下的抗旱能力。结果不同时期的灌溉策略（营养期60%，花铃期90%）同时保持了较高的抗旱性，其中金垦1565表现出最高的抗旱性。该方案在保持纤维质量的同时减少了26%的灌溉。外源50 mM Thi进一步提高了耐旱性，使蒸腾速率降低33%，叶片损伤降低55%。这些结果表明，在干旱条件下，阶段性水分管理优化了棉花种植的干旱适应。结论研究表明，新疆大部分抗旱品种可采用26%的节水方案，抗旱能力较弱的品种可采用早期施水稳产方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant and Soil 农林科学-农艺学

CiteScore

8.20

自引率

8.20%

发文量

543

审稿时长

2.5 months

期刊介绍： Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.