热带作物学报2018，Vol.39Issue(2)：246-253,8.DOI:10.3969/j.issn.1000-2561.2018.02.006
海滨雀稗突变体抗旱性的评价
The Evaluation on Drought Resistance of Mutants of Paspalum vaginatum
摘要
Abstract
The drought resistance of three Paspalum vaginatum varieties (Sea Isle2000,Platinum,Supreme) and 7 mutants induced by 60Co-γ from the three varieties were compared in the study.The five physiological indexes including leaf relative water content (RWC),leaf relative conductivity (REC),proline (Pro) content,soluble total sugar content(TSC) and leaf wilting coefficient under drought stress were measured to comprehensively evaluate the drought resistance of the varieties and mutants.The results showed that RWC of the three P.vaginatum varieties and 7 mutants decreased while leaf wilting coefficient,Pro,TSC and REC increased under drought stress condition.However the change levels of the above physiological indexes were different among different experimental plant materials.The decline levels of RWC of the mutants "PL-40-1","PL-40-2" and "SP-40-2" were significantly lower than those of the control under drought stress while the increase levels of leaf wilting coefficient,Pro,TSC and REC were significantly lower than those of the control.It was indicated that the three mutants of "PL-40-1","PL-40-2" and "SP-40-2" had a higher leaf water retentivity and better drought resistance than their parents whereas drought resistance of the mutants "SI-50-1","SI-50-5","SI60-6" and "PL-40-8" was inferior to their parents.关键词
海滨雀稗/突变体/水分胁迫/抗旱性Key words
Paspalum vaginatum/mutants/water stress/drought resistance分类
农业科技引用本文复制引用
徐彦花,谢新春,刘天增,张巨明..海滨雀稗突变体抗旱性的评价[J].热带作物学报,2018,39(2):246-253,8.基金项目
广东省科技计划项目(No.2012B020302002) （No.2012B020302002）
国家自然科学基金(No.31502011). （No.31502011）
