四川农业大学学报 ›› 1986, Vol. 4 ›› Issue (01): 119-127.doi: 10.16036/j.issn.1000-2650.1986.01.019

• 研究论文 • 上一篇    下一篇

建昌鸭、北京鸭与绿头鸭(Anas platyrhynchos)的核型及G带带型

熊淑慧, 邱祥聘, 曾凡同   

  1. 四川农业大学畜牧系
  • 收稿日期:1985-09-24 出版日期:1986-03-31 发布日期:2017-04-14

THE KARYOTYPES AND G-BANDED CHROMOSOMES OF JIANCHANG DUCKS, PEKING DUCKS AND MALLARD DUCKS

Xiong Shuhui, et al   

  1. Sichuan Agricultural University, Ya'an, Sichuan, China
  • Received:1985-09-24 Online:1986-03-31 Published:2017-04-14

摘要: 本试验分析了两种家鸭(建昌鸭和北京鸭)和绿头鸭(Anas platyrhynchos)的核型及G带带型。结果表明,三种鸭的核型相似。染色体数目2n=80(♂、♀)染色体基本臂数为86(♂)或85(♀)。性染色体为ZZ(♂)/ZW(♀)型。1号和2号染色体分别属亚中部(sm)和中部(m)着丝粒染色体。Z染色体(4号)属亚端部着丝粒染色体,具有明显的短臂。W染色体(大小相当于7-9号)和其余常染色体均属端着丝粒染色体。三种鸭的染色体G带带型显示出很大的同源性。本试验结果从核分类学角度说明了,在起源上家鸭与绿头鸭的亲缘关系密切,绿头鸭很可能是家鸭的祖先。

关键词: 鸭, 核型, 染色体显带, 染色体组型

Abstract: The karyotypes and G-banded chromosomes of two domestic ducks (Jian chang ducks and Peking ducks) and Mallard ducks (Anas platyrhynchos) were analysed. The karyotypes are similar. The diploid chromosome numbers are 80(♂,♀). The fundamental numbers are 86(♂)or 85(♀). The sex chromosome pattern is ZZ(♂)/ZW(♀). Chromosomes 1 and 2 are submetacentric and metacentric respectively. Z chromosome(4th)is subtelocentric with an obviously short arm. W chromosome (ranking between 7 th and 9 th) and the other autosomes are telocentric. A G-band homology was revealed in these ducks. These results indicate a close original relationship between domestic ducksand Mallard ducks. The Mallard duck is probably an ancestor of domestic ducks.

Key words: DUCK, KARYOTYPE, CHROMOSOMAL BANDING, IDIOGRAM