两种油菜花瓣缺失突变体无花瓣性状的遗传分析  

Inheritance for apetalous trait of two kinds of apetalous rapeseed mutants

作　　者：陈碧云[1] 伍晓明[1] 陆光远[1] 高桂珍[1] 许鲲[1] 李响枝[1] 

机构地区：[1]中国农业科学院油料作物研究所油料作物遗传改良重点实验室,湖北武汉430062

出　　处：《中国油料作物学报》2006年第3期263-267,共5页Chinese Journal of Oil Crop Sciences

基　　金：国家自然科学基金项目(39830270)(30170585);国家十五科技攻关项目(2004BA525B07)

摘　　要：以两种不同类型油菜花瓣缺失突变体为实验材料,通过与正常有花瓣油菜杂交并回交构建F2和BC1群体,分析两种油菜无花瓣突变体的无花瓣性状的遗传规律。根据田间各遗传群体花瓣度(PDgr)的观察和统计表明,甘蓝型油菜突变体APT02无花瓣性状由两对主效隐性基因和一对隐性修饰基因控制;白菜型油菜突变体AM032无花瓣性状由一对隐性基因控制。两种油菜无花瓣突变体无花瓣性状的遗传都不存在母体细胞质效应。In this study, APT02, an apetalous mutant in Brassica napus and AM032, an apetalous mutant in B. campestris, were used to construct F2 and BC1 populations respectively with normal petalous accessions of B. napus and B. campestris. Mode of inheritance for two kinds of rapeseed mutants with apetalous flowers was studied. Based on the observation of PDgr （petalous degree） segregation , It was hypothesized that the apetalous trait of APT02 was controlled by two pairs of recessive major genes and one pair of recessive modifying genes, and that of AM032 was controlled by a pair of recessive genes. Maternal effect wasn＇ t found in apetalous trait of APT02 and AM032.

关 键 词：甘蓝型油菜 白菜型油菜 花瓣缺失突变体 无花瓣性状 遗传分析 

分 类 号：S565.403.2[农业科学—作物学]