玉米苗期耐盐胁迫的筛选及综合评价  

Screening and comprehensive evaluation of salt tolerance in maize seedling stage

作　　者：赵斌 赵永星 李双丹 进茜宁 陈士林[1,2] 褚晓斌 ZHAO Bin;ZHAO Yongxing;LI Shuangdan;JIN Xining;CHEN Shilin;CHU Xiaobin(School of Agriculture,Henan Institute of Science and Technology,Xinxiang 453003,China;Henan Collaborative Innovation Center of Modern Biological Breeding,Xinxiang 453003,China;Luoyang Zhongken Seed Industry Technology Co.,Ltd,Luoyang 471003)

机构地区：[1]河南科技学院农学院,河南新乡453003 [2]现代生物育种河南省协同创新中心,河南新乡453003 [3]洛阳市中垦种业科技有限公司,河南洛阳471003

出　　处：《河南科技学院学报（自然科学版）》2024年第5期1-7,共7页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：河南省农业良种联合攻关(2022010204)。

摘　　要：对37个玉米品种在苗期进行耐盐性综合评价,旨在筛选出耐盐性强的玉米品种,为田间试验奠定种质资源及理论基础.采用100 mmol/L的NaCl溶液对37份玉米品种进行胁迫处理,分别测定其株高、地上部地下部鲜质量以及地上部地下部干质量、SPAD值、叶长和叶宽等性状,利用主成分分析法和隶属函数法,并通过聚类分析,对供试验材料进行综合评价和筛选.研究表明,地上部地下部的鲜质量及干质量四项指标与玉米的耐盐能力紧密相关,是评判耐盐性的关键因素.根据隶属函数值与聚类分析,37种玉米品种按耐盐强度可分为五个层次:高耐盐、耐盐、中等、敏感及高敏感.Through the comprehensive evaluation of the salt tolerance of 37 maize seedling traits,the materials with strong salt tolerance were screened,which provided germplasm resources and theoretical basis for subsequent field research.Thirty-seven maize inbred lines were treated with specific concentrations of NaCl solution,and maize traits were determined,and the test materials were comprehensively evaluated and screened by principal component analysis and membership function method,and cluster analysis.The results showed that the four indexes of seedling dry weight,seedling fresh weight,root fresh weight and root dry weight were the most closely related to the salt tolerance of maize varieties,which could be used as the main indicators for the selection of salt tolerance of maize varieties.

关 键 词：玉米 苗期 耐盐性 盐胁迫 隶属函数值 

分 类 号：S513[农业科学—作物学]