摘要
试验采用纯系蛋用黑羽鹌鹑与朝鲜鹌鹑(栗羽)按照公母比例1∶2进行正(反)交试验,选取F1代鹌鹑进行自交,并对F1代和F2代羽色进行观察和分析。结果表明:正反交试验组的F1代均为不完全黑羽,其公母比例均为1∶1,而正反交试验组的F2代均出现了黑羽、不完全黑羽和栗羽3种羽色,其比例为1∶2∶1。控制黑羽性状的基因h位于常染色体上,野生型H对黑羽基因h为不完全显性,该基因座(H/h)与Z染色体上的2个羽色基因座B/b和Y/y具有互作关系。黑羽的出现是在有色基因B存在下,黑羽基因座H/h与Y/y互作的结果,黑羽基因座隐性纯合时(hh)与栗羽基因Y互作使栗羽变为黑羽,黑羽基因座杂合时(Hh)与Y互作使栗羽变为不完全黑羽,该基因座显性纯合时(HH)与Y互作可产生野生型栗羽。
The reciprocal crossing experiments were conducted with pure egg black-plumage quail and pure Korean quail （maroon plumage）in the ratio of male to female 1：2 in this study. F1 generations were inter se to produce the F2 generation and plumage color of F1 and F2 generations was observed and analyzed. As a result, F1 generation from reciprocal crosses of black and maroon quail were all incomplete black feather and the ratio was 1：1 with male and female. There were three plumage color： pure black plumage, incomplete black plumage and maroon plumage came to 1：2：1 in F2 generations from the reciprocal crosses. It was proved that the gene h controlled the black plumage located in the autosomes, that the wildtype H was incompletely dominant to its allele h, and the locus （H/h） interacted with B/b and Y/y loci in Z-chromosome. The appearance of black plumage was the outcome of interaction between loci H/h and Y/y with the existence of gene B. The plumage color of quail would be changed from the maroon to the black when recessive homozygous （hh）at H/h locus had interaction with gene Y;it would be changed from the maroon to the incomplete black when heterozygous （Hh）at H/h locus had interaction with Y;It would keep wild type plumage color （maroon） when homozygote （HH）had interaction with Y.
出处
《中国家禽》
北大核心
2013年第15期6-10,共5页
China Poultry
基金
河南省重点科技攻关项目(082102130002)
河南科技大学校基金项目(2008ZY016)
关键词
蛋用鹌鹑
黑羽突变体
遗传机制
基因互作
layer quails
mutant of black feather
genetic mechanism
gene interaction
