浙江农业科学2026，Vol.67Issue(1)：18-25,8.DOI:10.16178/j.issn.0528-9017.20240670
干旱胁迫下外源氯化胆碱对小麦幼苗的缓解效应
Mitigative effect of exogenous choline chloride on wheat seedlings under drought stress
摘要
Abstract
In order to investigate the effects of exogenous choline chloride on the growth and physiological characteristics of wheat seedlings under drought stress,Huaimai 35 and Zhengmai 9023 were selected as materials.The pot experiment method was adopted,and a 15%PEG-6000 solution was regularly irrigated to simulate a drought environment.400 mg·L-1 choline chloride was sprayed on the leaves to treat the wheat seedlings.The alleviating effects of choline chloride on the growth and physiological characteristics of wheat seedlings under drought stress were analyzed.The results showed that under drought stress,the growth and development of wheat seedlings were inhibited.There were significant decreases in the number of tillers,leaves,roots,the longest root length and water content,and the root-shoot ratio significantly increased.Meanwhile,the activities of superoxide dismutase(SOD),peroxidase(POD),as well as the contents of proline and malondialdehyde(MDA),were significantly increased.After treatment with 400 mg·L-1 choline chloride,the activities of SOD,POD,and catalase(CAT)in wheat seedlings under drought stress were significantly increased,the scavenging ability of reactive oxygen species was greatly enhanced.Meanwhile,the content of MDA was significantly reduced,the content of proline was significantly increased,and the osmotic regulation ability of plants was strengthened.In terms of external morphology,it was manifested as a significant increase in the number of tillers,leaves,the longest root length,water content and a significant decrease in root-shoot ratio.The above results indicated that choline chloride can effectively alleviate the adverse effects of drought stress on the growth of wheat seedlings.关键词
小麦幼苗/干旱胁迫/氯化胆碱/形态指标/生理指标Key words
wheat seedling/drought stress/choline chloride/morphological indicator/physiological indicator分类
农业科技引用本文复制引用
张晋睿,刘泽亮,罗磊,普凯睿,王斐,蒋梓航,王化敦,陈新红,张林青..干旱胁迫下外源氯化胆碱对小麦幼苗的缓解效应[J].浙江农业科学,2026,67(1):18-25,8.基金项目
江苏省农业产业技术体系项目(JATS[2022]212) （JATS[2022]212）
江苏省农业科技自主创新资金项目(CX[20]3034) （CX[20]3034）
江苏省大学生实践创新训练项目(202411049118Y) （202411049118Y）
