水分胁迫对3种纤维亚麻种子萌发的影响  

Effects of Water Stress on Germination of Three Kinds of Fiber Flax Seeds

作　　者：王亚美[1] 杨雅婷[1] 雷传琴 赵钰[1] 计巧灵[1] 

机构地区：[1]新疆大学生命科学与技术学院,乌鲁木齐830046

出　　处：《种子》2013年第11期16-19,共4页Seed

基　　金：国家自然科学基金项目"纤维亚麻体细胞耐盐突变体的筛选"(编号:31160295);新疆大学大学生创新训练计划项目:新疆纤维亚麻耐旱突变体的初步筛选(H 024)

摘　　要：采用不同质量分数的聚乙二醇(PEG)模拟水分胁迫,研究3种纤维亚麻种子萌发和胚根生长对PEG的生理响应。结果表明:3个品种种子对10%PEG均不敏感,15%PEG是这3个品种种子萌发的敏感浓度;不同品种对水分胁迫的响应程度有所差异,经25%PEG处理,YOI 303的发芽率、发芽指数较高;经20%PEG处理,天鑫3号的发芽势较高;经20%、25%PEG处理,天鑫3号的胚根较长。The aim was to provide theoretical basis for screening and breeding drought tolerant fiber flax strains. Water stress conditions were simulated by different mass fraction of PEG,the physiological responses on three kinds of fiber flax seeds germination and radicle growth to water stress were explored. The results showed that three kinds of seeds were all not sensitive to 10% PEG, 15% PEG was the sensitive concentration on seed germination. Response levels of different varieties to water stress were diverse, germination capacity and germi nation index of YO1303 were higher than that of others treated with 25 % PEG, vigor of germination in Tianxin 3 was higher than that of others treated with 20% PEG, radicles of Tianxin 3 were longer than that of others after 20% ,25% PEG treatment.

关 键 词：纤维亚麻种子 水分胁迫 发芽率 发芽指数 发芽势 胚根长度 

分 类 号：S563.2[农业科学—作物学]