番鸭、家鸭及其属间杂种的染色体比较研究  

Comparative Studies on the Chromosomes of Muscovy Duck,Domestic Duck and Their Intergeneric Hybrid

作　　者：宋建捷[1] 檀俊秩[1] 陈晖[1] 刘玉涛[1] 

机构地区：[1]福建省农科院畜牧兽医研究所

出　　处：《福建省农科院学报》1996年第3期60-63,共4页

摘　　要：用骨髓细胞染色体制片法，分析了番鸭、白羽蛋鸭及其杂种Ｆ１的有丝分裂中期染色体核型。三种鸭的染色体数目２ｎ绝大多数为７８。番鸭的第１号染色体是亚中着丝点染色体（ｓｍ），白羽蛋鸭是中部着丝点染色体（ｍ），第２号均为中部着丝点染色体（ｍ）；性染色体为；ｚｓ／ｚｗ型，番鸭的ｚ染色体为端着丝点染色体（ｔ），白羽蛋鸭为亚端着丝点染色体（ｓｔ）；其余染色体均为端着丝点染色体（ｔ）。番鸭和家鸭的第１号染色体和；染色体的核型不同是造成巳不育的主要原因。The Chromosome preparations were made from myelocvtes of Muscovy duck,white feather egg-laying duck and their F1 hybrid.The metaphase chromosomes in mitotic cells were ana-lyzed.The diploid chromosome number with few exceptions in these ducks was 78.Pair 1 chromo-somes of Muscovy duck were submetacentric,White feather egg-laying duck′s chromosomes were metacentric;Pair 2 chromosomes of Muscovy duck and White feather egg-laying duck were meta-centric;sex chromosornes were zz/zw,Z chromosomes of Muscovy duck were telocentric,White feather egg-laying duck was actocentric,The other chromosomes were telocentriC.The dif-ferent karyotype in pair 1 and Z chromosome of Muscovy duck and Whlte feather egglaying duck was the major reason of infertility in their F1.

关 键 词：番鸭 家鸭 属间杂种 染色体 

分 类 号：S834.2[农业科学—畜牧学]