摘要
通过对甘蓝油菜新型细胞核雄性不育材料117AB的遗传规律研究表明,该材料的不育性是受两对具有相同作用的重叠隐性基因控制。按照遗传学的原理其恢复基因型有三类:1A_1A_1A_2A_2,2(A_1A_1A_2a_2,A_1a_1A_2A_2)、3(A_1A_1a_2a_2、a_1a_1A_2A_2),它们与117A杂交,F_2代出现可育:不育为15:1、27:5、3:1等3种育性分离比例,经过多年研究,验证了多种恢复基因型的存在,在常规品种(系)中具有A_1A_1A_2A_2基因型的占绝对多数(85.7％),并且在F_2代群体内利用不育株与可育株兄妹交配可以筛选出育性稳定地分离1:1的材料,此材料占总测交材料的比在三种育性比例F_2群体内分别为4:15、12:27、2:3。
The research of genetics on new sterile type GMS'material' No. 117AB in Brassicica napus L. revealed that the sterility is controlled by two pairs of overlanpping recessive genes with alike functions. Lets restoring genotypes can be classified into three types according to geneticprinciple?The first: A1 A1 A2 A2,the second?A1A1 A2 A2 and A1 A1 A2 A2, the third: A1 A1 A2 A2 and A1 A1 A1 A1 Making crosses with it to 'No. 117A,' It appeased three ratio of fertile to sterile in F2 segregation, That is 15: 1, 27 :5 and 3:1.
It has been demonstrated that manifold sestoring genotypes existed in conventional varieties of Brassica napus, and the A1 A1 A2 A2 amunted to 85.7%. Making cross between the fertile plant and stesile plant within the F2 population, stable materils with a segregation ratio 1:1 could be selected. The Rroportion of such materils existed in F2 of three fertilit ypes mentioned as above are 4/15, 12/27 and 2/3 respectively
出处
《贵州农业科学》
CAS
1992年第1期27-30,共4页
Guizhou Agricultural Sciences
关键词
油菜
甘蓝型
杂交种
自交
测交
Brassica napus
germ male sterillity
genotype
restoring line.
