[Genetic analysis of feather color and shank color traits based on F-2 resource population in Tibetan chicken].
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 Shou-Guang 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 Id/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.
Wang
Cun-Fang
CF
College of Animal Science and Technology, China Agricultural University, Beijing 100094, China. cunfangwang@163.com
Li
Ning
N
Wu
Chang-Xin
CX
D000825:Animal Structures / Q000737:chemistry*; D000818:Animals; D002645:Chickens / Q000235:genetics*; D005241:Feathers / Q000737:chemistry; D005260:Female; D006824:Hybridization, Genetic; D008297:Male; D010858:Pigmentation; D040641:Quantitative Trait Loci