河南农业科学2017，Vol.46Issue(6)：104-107,4.DOI:10.15933/j.cnki.1004-3268.2017.06.019
干旱胁迫对海棠幼苗生长及生理特性的影响
Effect of Drought Stress on the Growth and Physiological Characteristics of Begonia Seedlings
摘要
Abstract
Potted seedlings of five species of begonia were used as materials to study the effects of drought stress on the growth and physiological characteristics,in order to provide excellent varieties of begonia for landscaping and the selection of apple rootstock.The results showed that with the increase of drought stress,the shoot relative growth and root activity displayed a downward trend of each begonia seedlings.Under severe drought stress,M.robusta could still maintain a relative growth of up to 79.649%,while M.komarovii was only 34.820%.And the root activity of M.robusta was the least affected,which was 35.71%.Under severe drought stress,except M.robusta the MDA contents of the others were higher than CK significantly.M.komarovii was the highest,reaching 3.077 times of CK.Under severe drought stress,the SOD activity of M.zumi rose the fastest,which was 1.119 times of CK.According to comprehensive analysis and subordinate function,the drought resistance level of five species of begonia seedlings was as following:M.robusta>M.micromalus>M.prunifolia>M.zumi>M.komarovii.关键词
干旱胁迫/海棠/生理特性/隶属函数Key words
drought stress/begonia/physiological characteristics/subordinate function分类
农业科技引用本文复制引用
胡妍妍,李钊,骆建霞..干旱胁迫对海棠幼苗生长及生理特性的影响[J].河南农业科学,2017,46(6):104-107,4.基金项目
天津市科委基础与前沿技术研究计划项目(14JCYBJC30200) （14JCYBJC30200）
天津市农委农业科技示范推广项目(201101120) （201101120）
国家星火项目(2015GA610029) （2015GA610029）
