甘蓝型油菜细胞质雄性不育材料RMcms的育性变化特性的研究  

Study of the Maleing Rariety of RMcms in Brassica napus L.

作　　者：李敏[1,2] 张瑞茂[1,2] 安万雄 

机构地区：[1]贵州省油料科学研究所,思南565109 [2]贵州省石阡县气象局,石阡555100

出　　处：《种子》2003年第2期13-15,共3页Seed

基　　金：贵州省油菜"九五"攻关项目 (编号 961 0 1 1 ) ;贵州省农业厅重点资助项目 (编号 1 998- 1 0 )

摘　　要：广恢型细胞质雄性不育材料 (RMcms)在开花后期均有不同程度的微量花粉发生 ,主要分布于花序的上部 ,在同一植株上 ,其微粉发生的程度次序为主花序 >一次分枝 >二次分枝 ;微量花粉发生与开花前 1 8天、1 9天或 2 0天的平均日最高温和平均日均温有着密切的关系 ,当平均日最高温稳定通过 2 0℃、平均日均温 >1 4 .5℃时所开花朵即有不同程度微量花粉发生 ,说明该类型不育材料属高温敏感型。该类型不育系的不育性因细胞质的来源不同而有很大的差异 。There is vary grade minim pollen in abloom evening of RMcms. The minim pollen was distributing upside inflorescence on the same plant,the grade sequence of happening minim pollen is the mostly inflorescence>the first dirarication>the second dirarication.There is osculating relation happening of the grade minim on the even the day tiptop temperature and the even day temperature before 18 to 20 days,when the even tiptop day temperature was stabilzatly pass 20℃ or the even day temperature>14.5℃, the defferent grade minim pollen happening. the results show that the material is high temperature keening types. There is plenty difference one the maleing identity because that the diffent origin of the cytoplasm and the cytoplasm abd the plenty difference plant in the same male sterile line colong.

关 键 词：甘蓝型油菜 细胞质雄性不育 RMcms 育性变化 育性指数 不育度 

分 类 号：S565.4[农业科学—作物学]