河南农业科学Issue(11)：118-123,6.
二倍体和四倍体泡桐对干旱胁迫生理响应差异研究
Comparative Studies on Physiological Responses of Diploid Paulow nia and Its Tetraploid to Drought Stress
摘要
Abstract
With relative soil water contents of 75% ,55% ,40% and 25% ,the physiological re-sponse of diploid Paulow nia tomentosa(T2) ,diploid Paulow nia tomentosa × Paulow nia f ortunei (TF2) and their tetraploid Paulownia(T4 ,TF4) plants to drought stress were studied .The result showed that the changing trend of leaf physiological and biochemical indexes was consistent be-tween the tetraploids and their dipoid Paulownia plants with aggravation of drought stress .The water and chlorophyll contents of the leaves went down with aggravation of drought stress ,and the water and chlorophyll contents of the tetraploid Paulownia plants leaves were higher than those of the diploids .The relative conductivity and content of MDA increased with aggravation of drought stress ,with the tetraploid Paulownia plants less than the diploid .The SOD activity and soluble protein content increased firstly and decreased afterwards .The contents of soluble sugar and proline increased with aggravation of drought stress ,and the tetraploids were higher than its diploid .Based on the leaf physiological indexes in the soil with 25% relative soil water content by a comprehensive analysis of fuzzy membership functions ,the order of drought stress tolerance of the Paulownia plants was T4> TF4> T2> TF2 .关键词
二倍体泡桐/四倍体泡桐/干旱胁迫/生理响应Key words
diploid Paulow nia/tetraploid Paulow nia/drought stress/physiological response分类
农业科技引用本文复制引用
张晓申,翟晓巧,邓敏捷,董焱鹏,赵振利,范国强..二倍体和四倍体泡桐对干旱胁迫生理响应差异研究[J].河南农业科学,2013,(11):118-123,6.基金项目
河南省杰出人才基金项目（122101110700）；郑州市科技创新团队资金项目 （）
