摘要
采用白来航、寿光鸡分别与藏鸡进行正反交交配,F1代进行自群交配产生F2群体,观察F1和F2代中羽色、胫色的表现和分离比例。结果表明,白来航鸡的白羽和寿光鸡的黑羽对藏鸡麻羽的遗传方式是完全显性遗传;麻羽是由两个或两个以上的等位基因决定的,只有同时存在这两个或两个以上的等位基因,才可能表现出麻羽来;决定胫色性状的Id/id基因为伴性遗传,隐性基因id在纯合子时有个逐步表达的过程;证实了所用白来航公鸡胫色性状的基因型为显性纯合子。
Tibetan chickens were crossed reciprocally with White Leghorn and Shou-Guang chicken respectively, and inter se matings in F1 were carried out to generate the F2 population. Feather color and shank color appearance and segregation ratio in F1 and F2 were observed. Results indicate that white feather of White Leghorn chicken and black feather of Shouguang chicken exhibit complete dominant heredity to hemp feather of Tibetan chicken. Hemp feather is determined by two or more alleles. Only when these two or more alleles are concurrently present, will hemp feather then be displayed. The ld/id allele that determines shank color demonstrates sex-linked inheritance, and the recessive id is expressed gradually in the homozygotes. We confirm that genotype of shank color in White Leghorn rooster used in this study is the dominant homozygote.
出处
《遗传》
CAS
CSCD
北大核心
2006年第7期810-814,共5页
Hereditas（Beijing)
基金
教育部科学技术重大项目(编号:10404)资助~~
关键词
藏鸡×白来航
藏鸡×寿光鸡
资源家系
羽色
胫色
Tibetan chicken × White Leghorn chicken
Tibetan chicken × Shouguang chicken
resource population
feather color
shank color
