Effect of Drought Stress on the Growth and Physiological Characteristics of Begonia Seedlings
HU Yanyan
LI Zhao
LUO Jianxia
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.
Keywords：drought stressbegoniaphysiological characteristicssubordinate function
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 104-107 )