干旱地区农业研究2017，Vol.35Issue(6)：109-115,7.DOI:10.7606/j.issn.1000-7601.2017.06.17
模拟干旱条件下冬小麦品种萌发期抗旱性评价
Evaluation of drought resistance of winter wheat under drought stress simulation at germination stage
摘要
Abstract
To identify winter wheat varieties with high germination rate,which is suitable for dry area of north Chi-na,drought treatments were performed using -0.50 MPa(19.6%)PEG-6000 aqueous solution.The results showed that the averages of the five traits under treatment were decreased by 77.3%,40.0%,30.7%,16.7% and 78.0%, respectively compared with the control.Analysis with the traits of drought resistance showed that the 19.6% PEG-6000 simulation stress promoted the main radicle length elongation of some varieties,including Lovlin 13,Wennong 14 and Lunxuan 987,which may be active in drought-resistance response.D value calculated by the weighting membership function method was positively correlated with drought resistance indices,such as the coleoptile length,root number.Ac-cording to UPGMA algorithm with drought resistance coefficient,the material was divided into two major categories in the genetic distance of 0.82.Accordingly,the strongest drought-resistance germplasm was indentified as Lovlin 13,Wen-nong 14,Chinese spring wheat,Luomai 8,Lunxuan 987,Taishan 22,Shannong 17,Tainong 18,Yanhangxuan 2, Zhongyu 6,Lumai 14,Tainong 6258 and Tainong 2987.关键词
小麦/萌发期/抗旱性/胚芽鞘长/隶属函数法/聚类分析Key words
wheat/germination stage/drought resistance/coleoptile length/membership function method/cluster-ing analysis分类
农业科技引用本文复制引用
孙绿,李玉刚,王圣健,刘亚东,王志英,刘丹,李娜娜,赵长星,盖红梅..模拟干旱条件下冬小麦品种萌发期抗旱性评价[J].干旱地区农业研究,2017,35(6):109-115,7.基金项目
国家自然科学青年基金(31301320) （31301320）
国家科技支撑计划项目(2011BAD09B01 -2) （2011BAD09B01 -2）
山东省农业科学院青年科研基金(2014QNM09) （2014QNM09）
国家重点研发计划(2016YFD0300400,2016YFD0100302) （2016YFD0300400,2016YFD0100302）
