Seedling Screening of Drought Resistance Varieties of Sweetpotato and Drought Resistance Index Research
Yuan Zhen
Wang Baoqing
Jiang Yao
Xie Beitao
Dong Shunxu
Zhang Haiyan
Duan Wenxue
Wang Qingmei
Zhang Liming
Abstract：In order to screen drought resistance varieties of sweetpotato rapidly ,22 sweetpotato varieties ( lines) were studied by indoor simulated continuous drought method with PEG .The results showed that the roots water retention ,root activity and seedling survival rate of Jishu 21 ,12057 ,11001 and 09281 were higher , which implied strong drought resistance in seedling stage .Through statistical analysis , the roots water reten-tion,seedling quality ,water content of seedling and root activity could be used for important screening indexes of drought resistance in seedling .The water retention capacity of roots under drought stress and seedling status after cutting were the important factors influencing the sweetpotato seedling drought resistance .In production , selecting drought tolerance varieties and strong seedlings are important measures to resist drought stress .
Keywords：SweetpotatoDrought resistanceSeedling
Publication Date：2015-03-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 22-26,36 )