安徽农业科学2011，Vol.39Issue(6)：3644-3646,3665,4.
不同产地老芒麦的苗期抗旱性研究
Drought Resistance of Elymus sibiricus from Different Producing Areas at Seedlings Stage
摘要
Abstract
[ Objective ] To evaluate drought resistance of Elymus sibiricus from different producing areas. [ Method] Germplasm materials of Elymus sibiricus from Xinjiang ( E01 ),Gansu ( E02 ), Beijing ( E03 ), Shanxi ( E04 ) and Qinghai ( E05 ) were used as experimental materials and treated under continuous drought stress. The external morphology of their leaves was observed. On Day 0,5 and 10,the dynamic variations of relative electrical conductivity,malondialdehyde (MDA) content,chlorophyll content,soluble sugar content and proline content were determined. Subordinate function values analysis was performed to evaluate their drought resistance comprehensively. [ Result] Under continuous drought stress,the experimental Elymus sibiricus showed different external morphology of leaves. With increasing intensity and extending time of drought stress,the chlorophyll content increased significantly (P ＜ O. 05 ), and its differences between the Elymus sibiricus from different producing areas were significant (P ＜ 0.05 ); the relative electrical conductivity, malondialdehyde (MDA) content, soluble sugar content and proline content decreased significantly ( P ＜0.05) ,and their differences between the Elymus sibiricus from different producing areas were significant (P ＜0.05). [ Conclusion] The drought resistance of E04,E05 ,E01 ,E03 and E02 declined successively.关键词
老芒麦/抗旱性/综合评判Key words
Elymus sibiricus / Droutght resistance /Comprehensive evaluation分类
农业科技引用本文复制引用
卢素锦,周青平,刘文辉,梁国玲..不同产地老芒麦的苗期抗旱性研究[J].安徽农业科学,2011,39(6):3644-3646,3665,4.基金项目
农业部青藏高原牧草种质资源保护利用项目(070401) （070401）
现代农业产业技术体系建设专项资金. （）
