环境诱导雄性不育26窄早突变体育性转换特性研究  

STUDY OF FEKTILITY CONVERSION ON ENVIRONMENTAL FACTOR INDUCED MALE STERILE MUTANT FROM INDICA RICE VARIETY 26 ZHAIZAO

作　　者：沈毓渭[1] 蔡其华[1] 高明尉[1] 

机构地区：[1]浙江农业大学原子核农业科学研究所

出　　处：《核农学报》1995年第3期134-138,共5页Journal of Nuclear Agricultural Sciences

摘　　要：用２９０Ｇｙ６０Ｃｏγ射线处理柏稻品种２６窄早干种子，在Ｍ２和Ｍ３中获得了数个育性受环境因素调节的突变体。对其中１份突变体进行生态箱鉴定和田间鉴定表明，其育性转换受温度控制，在日长为１２～１４ｈ时，临界日平均温度约为２３℃，低于２３℃可诱导雄性不育，高于２３℃则恢复部分可育。此突变体的育性转换特征不同于已有的光（温）敏不育系。Male sterile mutants were isolated from M2 and M3 generations of indica rice variety 26Zhaizao,of which the dry seeds were irradiated with 60Co γ-rays of 290Gy.One selected mu-tant was planted and ratooned in two successive years for observation of fertility converslonin ditrerent seasons.Growth chamber test and field trial showed that the termperature wasthe major factor conditioning the fertility alteration. The critical daily average temperaturefor the fertility conversion of this mutant growing under 12.5h and 14.0h of daylength wasabout 23℃,below which the plants were induced to completely sterile.The characteristics ofthe fertility alteration of this mutant seemed different from that of other thermosensitivemale sterile lines so far developed.

关 键 词：灿稻 辐照 突变体 育性转换 诱导 三系配套 

分 类 号：S511.210.3[农业科学—作物学]