金定鸭的核型及G带带型研究  

Studies on Jingding ducks' karyotype and G-banded pattern

作　　者：赵捷[1] 段修军[1] 卞友庆[2] 赵旭庭[2] 陈国宏[1] 

机构地区：[1]扬州大学动物科学与技术学院,江苏扬州225009 [2]江苏畜牧兽医职业技术学院,江苏泰州225300

出　　处：《扬州大学学报（农业与生命科学版）》2007年第1期30-33,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家自然科学基金资助项目(30170673)

摘　　要：采用外周血淋巴细胞培养法制备染色体标本，对金定鸭染色体核型和G带带型进行研究。结果表明：①金定鸭体细胞染色体数目（2n）为78，染色体基本臂数为84（舍）或83（旱），1号染色体为亚中央着丝粒染色体，2号染色体为中央着丝粒染色体，Z染色体具有明显的短臂，属亚端着丝粒染色体，其余常染色体和W性染色体均为端着丝粒染色体；性染色体按由大到小顺序排列：Z为4号，W为7～8号。②金定鸭的G带带型，前10对大染色体可分为131条带。Utilizing a technique for the culture of peripheral blood lymphocyte, chromosome preparations were made of Jinding ducks, and the karyotype and G-banded patterns of Jinding ducks were analyzed. The result of karyotype analysis showed that the diploid chromosome number of Jingding duck was 2n= 78, the total number of chromosome arms were 84 （ ♂ ） or 83 （ ♀）, and the No. 1 chromosome was submetacentric, No. 2 chromosome was metacentrics, Z-chromosome was a subtelocentric chromosome, with an obviously short arm, W-chromosome and the other autosomes were telcentrics. According to the measured relative length, Z-chromosome was the No. 4, W-chromosome was ranked between No. 7 and No. 8. Study on Jingding ducks＇ G-bands showed that the first 10 pairs of macrochromosomes could be divided into 131 bands.

关 键 词：金定鸭 核型 G带 

分 类 号：S834.2[农业科学—畜牧学]