江西农业学报Issue(2)：30-36,7.
5种乡土灌木对模拟干旱胁迫的生理响应
Physiological Responses of Five Native Wild Shrubs to PEG Drought Stress
摘要
Abstract
Using PEG-6000 to simulate drought stress , we determined and analyzed the 5 physiological indexes ( relative wa-ter content, relative electrical conductivity, MDA content, soluble sugar content, and proline content) of leaves of five common wild shrub species in South China , explored the change rule of various physiological indexes of different species under different intensities of drought stress , and conducted the comprehensive evaluation of the drought resistance of these species by principal component a -nalysis.The results indicated that the leaf relative water contents of all species were decreased along with the intensification of drought stress, while Maclura cochinchinensis, Syzygium buxifolium, Syzygium tephrodes, and Cassia corymbosa also maintained higher leaf relative water content under serious drought stress .The relative electrical conductivity and MDA content all increased with the extension of stress duration .The contents of proline and soluble sugar in most species somewhat increased as the stress du -ration prolonged .The principal component analysis was carried out , and the result showed that the drought resistance of 6 shrub spe-cies had the following order:Syzygium buxifolium >Syzygium tephrodes >Maclura cochinchinensis >Rosa multiflora var.cathay-ensis >Cassia corymbosa >Ficus formosana.关键词
PEG/野生灌木/抗旱性/主成分分析Key words
PEG/Wild shrubs/Drought resistance/Principal component analysis分类
农业科技引用本文复制引用
蔡静如,钱瑭璜,雷江丽..5种乡土灌木对模拟干旱胁迫的生理响应[J].江西农业学报,2015,(2):30-36,7.基金项目
深圳市战略性新兴产业发展专项资金项目“深圳市生态修复生物工程技术研究开发中心（GCZX20120618100801416）”。 （）
