甘蓝型油菜雄性不育材料S90—8—7的获得及细胞学研究  

Studies on male sterile line S90—8—7 derived from progenies of hybrids between Brassica napus and Orychophragmus violaceus

作　　者：黄邦全[1] 罗鹏[2] 吴书惠[2] 

机构地区：[1]湖北大学生命科学学院,湖北武汉430062 [2]四川大学生物系,四川成都610064

出　　处：《湖北大学学报（自然科学版）》2000年第2期182-184,共3页Journal of Hubei University：Natural Science

基　　金：四川省"八五"油菜攻关资助项目

摘　　要：从甘蓝型油菜与诸葛菜属间杂种后代中获得一个芥酸含量低、亚油酸含量较高的雄性不育材料S90— 8—7.细胞学研究表明 ,S90— 8—7的染色体数为 2n =38,其花药发育受阻于四分体至单核花粉期 ,属单核败育型 .小孢子发育到单核期后 ,不再向前发育成为二核期和三核期花粉 ,而是逐渐退化以至解体 .在减数分裂后期Ⅰ /末期Ⅰ一些细胞出现落后染色体或染色体桥 .不育系绒毡层延迟退化 ,一直到单核小孢子晚期才迅速解体 .初步认为S90— 8— 7可能是一个细胞核雄性不育材料 ,其不育性至少受一对隐性基因控制 .A male sterile line S90—8—7 was obtained from progenies of hybrids between Brassica napus and Orychophragmus violaceus.Cytological studies indicated that the chromosome number of this material was 2n=38,and its anther ontogeny was inhibited between tetrad and uninucleic pollen stages.At AⅠ/TⅠ there were chromosome bridges or lagging chromosomes in some pollen mother cells.The tapetum did not disappear until uninucleic pollen stage when the microspores degenerated.It was supposed that the male terility was controlled at least by one pair of recessive genes.

关 键 词：甘蓝型油菜 诸葛菜 雄性不育 S90-8-7 细胞学 

分 类 号：S565.403.5[农业科学—作物学]