[1]王梦珂,任尚福,王婷,等.外源褪黑素对干旱胁迫下甜高粱根系状态及生理特性的影响[J].江苏农业科学,2025,53(18):84-91.
 Wang Mengke,et al.Impacts of exogenous melatonin on root status and physiological characteristics of sweet sorghum under drought stress[J].Jiangsu Agricultural Sciences,2025,53(18):84-91.
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外源褪黑素对干旱胁迫下甜高粱根系状态及生理特性的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第53卷
期数:
2025年第18期
页码:
84-91
栏目:
干旱胁迫
出版日期:
2025-09-20

文章信息/Info

Title:
Impacts of exogenous melatonin on root status and physiological characteristics of sweet sorghum under drought stress
作者:
王梦珂1任尚福1王婷1张坤1李璐1方志刚12
1.喀什大学生命与地理科学学院/新疆帕米尔高原生物资源与生态重点实验室,新疆喀什 844000; 2.喀什大学现代农学院,新疆喀什 844000
Author(s):
Wang Mengkeet al
关键词:
甜高粱干旱胁迫褪黑素根系结构
Keywords:
-
分类号:
S514.01
DOI:
-
文献标志码:
A
摘要:
探究外源褪黑素对干旱胁迫下甜高粱植株生长、气孔变化、根系表型、根系活力以及根系内源激素含量的影响,旨在揭示褪黑素调节甜高粱抗干旱胁迫的生理机制。以甜高粱品种大力士为材料,用5%、10%聚乙二醇6000(PEG)模拟轻度、中度干旱胁迫,通过根部施加1 μmol/L褪黑素(MT)进行水培试验。结果表明,干旱胁迫可抑制甜高粱幼苗根系表型性状,显著降低根系活力(P<0.05),导致植株生长缓慢。轻度干旱胁迫下,施加1 μmol/L的MT,促进甜高粱植株生长,叶片气孔明显张开,且根长、根表面积、根体积、内源生长素含量均显著提高;中度干旱胁迫下,根部施加1 μmol/L的MT,甜高粱植株的株高、总叶面积显著提高,气孔也有张开现象,根系活力及内源玉米素、赤霉素、生长素的含量均显著提高。说明在干旱胁迫下,根部施加1 μmol/L的MT能够通过调节内源玉米素、赤霉素、生长素的含量,优化根系表型,增加根系活力,促进植株的水分吸收,优化气孔状态,提高甜高粱幼苗抗旱胁迫效应,且在中度干旱胁迫下效果优于轻度干旱胁迫。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2024-11-06
基金项目:新疆维吾尔自治区自然科学基金(编号:2022D01A232);喀什大学高层次人才科研启动项目(编号:022019032)。
作者简介:王梦珂(2000—),男,河北石家庄人,硕士研究生,主要从事植物逆境生理与资源利用研究。E-mail:2794047470@qq.com。
通信作者:方志刚,博士,副教授,主要从事植物逆境生理与资源利用研究。E-mail:wang315047@163.com。
更新日期/Last Update: 2025-09-20