草业学报2011，Vol.20Issue(5)：34-41,8.
偃麦草属植物种间苗期抗旱性评价
Assessment of interspecies drought resistance of Elytrigia at the seedling stage
摘要
Abstract
The drought resistance of 10 species of Elytrigia, collected from six countries, was identified and evaluated using simulated drought stress and rewatering in a green house at the seedling stage. The relative wa ter content of leaves (RWC), relative electrical conductivity rate (REC), free proline accumulation (Pro), con tents of malondialdehyde (MDA) and the soluble sugar content (SSC) were measured at 0 (CK), 7, 14, 21, 28, and 35 days of drought stress and 7 days after rewatering. Their average survival rates (ASR) after 35 days of drought stress followed by the rewatering were calculated. The three drought resistant classes: high drought resistance (ET001, EPU02, EJ003 and EH001), medium drought resistance (ES001, EE013 and EC002) and weak drought resistance (ER037, EL001 and EI022) were classified using the above 5 physiological indexes by the Euclidean distance clustering method.关键词
偃麦草属/种间/抗旱性/评价Key words
Elytrigia/ interspecies/ drought resistance/ assessment分类
农业科技引用本文复制引用
孟林,杨宏新,毛培春,高洪文..偃麦草属植物种间苗期抗旱性评价[J].草业学报,2011,20(5):34-41,8.基金项目
“十一五”国家科技支撑项目(2008BADB3B01,2008BADB3B05),农业部牧草种质资源保护项目和北京市农林科学院科技创新能力建设专项(KJCX201101003)资助. （2008BADB3B01,2008BADB3B05）
