甘蓝型油菜RGCMS雄性不育系的花器形态及花药发育的解剖学研究  

Studies on the Morphology of the Flowers and the Anatomy of the Anther Development of RGCMS lines in Brassica napus L.

作　　者：杨光圣[1] 瞿波[1] 李海渤[1] 傅廷栋[1] 

机构地区：[1]华中农业大学作物遗传改良国家重点实验室,武汉430070

出　　处：《华中农业大学学报》2000年第6期528-532,T001,T002,共6页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金资助项目

摘　　要：花器形态和花药发育的解剖学观察表明 ,RGCMS S45A和RGCMS 117A中表现波里马细胞质雄性不育 (polCMS)的植株 ,其花器形态和花药发育的解剖学特点与polCMS相同 ,即在高温条件下 ,花瓣较小 ,表现彻底不育 ,无花粉囊的分化 ;在低温条件下 ,花瓣变大 ,表现部分雄性不育 ,可分化出 1～ 4个花粉囊 ,并产生一定数量可育花粉。表现核质不育 (RGCMS)的植株 ,在高温条件下 ,花瓣小 ,表现彻底的polCMS不育 ,无花粉囊的分化 ;在低温条件下 ,花瓣变大 ,也表现彻底雄性不育 ,具有核、质不育的共同特点 ,每个花药可分化出 1～ 4个花粉囊 ,但无可育花粉 ,其雄性败育时期和特点与S45A和 117A相同。Morphological and anatomical observations showed that the pol CMS plants in RGCMS?117A or RGCMS S45A were complete male sterile ,had no pollen sac differentiation and had smaller petals and stamens at higher temperature situation. But they were partial sterile, had 1～4 pollen sacs in each anther and had relative bigger petals and stamens at lower temperature situation. The RGCMS plants were complete sterile at the both temperature situations, and there was no pollen sac differentiation and had smaller petals and stamens at the higher temperature situation, but there were 1～4 pollen sacs in each anther and had bigger petals and stamens at the lower temperature situation. The cytological characteristics of the anther development were the same as that of GMS line 117AB and S45AB.

关 键 词：甘蓝型油菜 雄性不育 形态学 解剖学 花器 

分 类 号：S565.403.5[农业科学—作物学]