作物学报2024，Vol.50Issue(5)：1193-1206,14.DOI:10.3724/SP.J.1006.2024.31049
小麦芽期和苗期耐盐鉴定方法的适用性评价
Applicability evaluation of screen methods to identify salt tolerance in wheat at germination and seedling stages
摘要
Abstract
Salt tolerance identification is the premise of screening germplasm and breeding salt-tolerant wheat varieties.There are many methods for testing salt tolerance of wheat indoor,involving different growth stages and tissues or organs.In order to evalu-ate the applicability of these methods in production,we selected five salt-tolerant varieties and five salt-sensitive varieties from the Northern Winter Wheat Production Area of China to compare seven identification methods(involving 27 parameters)for the responses to salt stress of wheat at germination and seedling stages.The results showed that the relative salt-injury rate for germi-nation of grains could not distinguish the tolerant-and sensitive-varieties,while the salt-injury index of leaf,the Na+ and K+ fluxes of root,and the relative salt-injury rates for root tip number,root diameter as well as leaf K+ content of seedlings were signifi-cantly different between the tolerant-and sensitive-varieties.Based on the results of regressive analysis and operability,the salt-injury index of leaf was considered to be an appropriate method for identifying salt tolerance that with high applicability in the Northern Winter Wheat Production Area,which can be used for germplasm screening or variety breeding by integrating the relative salt-injury rate for root tip number or leaf K+ content,and the Na+ or K+ flux of root.This study analyzed and evaluated the salt tolerance identification methods from the aspect of application,and provide reference information for salt tolerance breeding in wheat.关键词
小麦/耐盐鉴定/方法评价/芽期/苗期Key words
wheat/salt-tolerance identification/method evaluation/germination stage/seedling stage引用本文复制引用
陈家婷,李欣,冯瑞云,畅志坚,乔麟轶,白欣,谷雨杰,张潇文,郭慧娟,常利芳,陈芳,张树伟,张晓军..小麦芽期和苗期耐盐鉴定方法的适用性评价[J].作物学报,2024,50(5):1193-1206,14.基金项目
本研究由中央引导地方科技发展资金项目(YDZJSX2022A046),山西省回国留学人员科研资助项目(2021-070)和山西农业大学博士科研启动项目(2021BQ39)资助.This study was supported by the Science and Technology Development Foundation of Central Guides Local Government Project(YDZJSX2022A046),the Research Project Supported by Shanxi Scholarship Council of China(2021-070),and the Shanxi Agricultural University Research Project for Doctor(2021BQ39). （YDZJSX2022A046）
