抗冷与不抗冷水稻在低温期间叶片ABA与GA_1水平变化的差异  

Differential Response of ABA and GA 1 Levels Between Chilling Resistant and Chilling Sensitive Varieties of Rice During Chilling Stress

作　　者：黄涛[1,2] 陈大洲[1,2] 夏凯[1,2] 周燮 

机构地区：[1]南京农业大学农学系 [2]江西省农业科学院

出　　处：《华北农学报》1998年第4期56-60,共5页Acta Agriculturae Boreali-Sinica

基　　金：国家自然科学基金

摘　　要：采用抗冷性强的东乡野生稻（东野）和对低温敏感的６２２５两个籼稻品种。发现稻苗的抗冷性与低温期间内源脱落酸（ＡＢＡ）含量上升及赤霉素（ＧＡ１）含量下降均有密切关系。东野的抗冷性比６２２５强，可能是因为其内源ＡＢＡ、ＧＡ１水平对低温的响应比６２２５迅速，东野的ＡＢＡ／ＧＡ１比值在低温２４ｈ时就已达到最大值。Two varieties of rice were used.One is Dongxiang wild rice (Dongye)(Oryza sativa f. spontanea Roschev) which is chilling resistant,and the other is 6225(Oryza sativa indica)which is chilling sensitive.The results indicated that the increase of ABA content and the decrease of GA 1 content are greatly related to the chilling resistance of the rice seedlings. The reason of high chilling resistance of Dongye is that its ABA and GA 1 levels have a much prompter response than that of 6225 to chilling stress.

关 键 词：水稻 冷胁迫 脱落酸 赤霉素 ABA GA1 

分 类 号：S511.01[农业科学—作物学]