水分胁迫条件下玉米毛状根再生植株耐旱性研究  

Drought resistance of regenerative plants from hairy root cultures in maize under water stress

作　　者：徐洪伟[1] 陆静梅[2] 周晓馥[1] 

机构地区：[1]吉林师范大学遗传生理研究所,四平136000 [2]东北师范大学生命科学学院,长春130024

出　　处：《农业工程学报》2007年第7期19-23,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：吉林省科技发展计划重大项目(#200650082006)资助

摘　　要：以玉米毛状根再生植株为材料探讨其抗旱性,通过形态学指标:株高胁迫指数、干物质胁迫指数、根数、根长、根体积、根干质量、根的总吸收面积、根的活跃吸收面积及根冠比在水分胁迫下的变化的分析、灰色系统分析,表明根干质量、干物质胁迫系数、单株叶面积、根冠比、根体积与抗旱指数关系较密切。研究表明,毛状根再生植株由于强大的根系,即使在水分胁迫下仍能保持良好的根源水分信号,具有较强的抗旱能力。The drought resistance from regenerative plants of hairy root cultures in maize was investigated in this paper. The grey system analysis was used in this study for analyzing the change of the morphological characteristics, which included plant height stress index（PHSI）, dry matter stress index（DMSI）, number, length, volume, dry weight, total absorbing area, active absorbing area, and root/shoot ratio. The results revealed the close relationships among dry weight, DMSI, leaf area of single plant, root/shoot ratio, volume and drought resistant index. Because of high lines of the regenerative plants from hairy root cultures in maize, it has close relationship with drought resistance and keeps strong hydraulic root signal under water stress.

关 键 词：毛状根再生植株 发根农杆菌 水分胁迫 耐旱性 

分 类 号：Q945.78[生物学—植物学]