两种泥鳅杂交及人工诱导大鳞副泥鳅雄核发育的染色体变化  

The chromosome set variation in hybridization of Misgurnus anguillicaudatus with Paramisgurnus dabryanus and in artificial and rogenetic P. dabryanus

作　　者：赵振山[1] 高贵琴[1] 吴青江[2] 

机构地区：[1]华中农业大学淡水水产增养殖生物学农业部重点实验室,湖北武汉430070 [2]中国科学院水生生物研究所,湖北武汉430072

出　　处：《大连水产学院学报》2002年第1期15-19,共5页Journal of Dalian Fisheries University

基　　金：国家自然科学基金资助项目 (3 9770 5 92 ) ;湖北省自然科学基金资助项目

摘　　要：当泥鳅自交时 ,其后代染色体数为 2n =1 0 0 ;如果泥鳅卵子与大鳞副泥鳅精子授精 ,其染色体来源于两种泥鳅 ,染色体数为 2n =74,并未发现有染色体丢失现象。当泥鳅卵子经紫外线辐射后与大鳞副泥鳅精子授精 ,如果不进行二倍化处理 ,86%的胚胎染色体完全来源于父本大鳞副泥鳅 ,为雄核发育单倍体n =2 4 ,经过二倍化处理后所获得的二倍体为大鳞副泥鳅雄核发育纯合二倍体 ,染色体数为 2n =48。The chromosome number of\% Misgurnus anguillicaudatu\%s (♀) mating with\% M. anguillicaudatus\% (♂) offspring is 2n=100; When\% M. anguillicaudatus \%(♀) hybridizes with \%Paramisgurnus dabryanus\% (♂) directly, the offspring has chromosome number of 2n=74, it was not found the chromosome lost during the embryos development. When the eggs of\% M. anguillicaudatus\% were irradiated by ultraviolet rays (UV) and fertilized with \%P. dabryanus\%, without diploidization treatment, the chromosome set of 86% offspring come from paternal, it is androgenetic haploid\% P. dabryanus\%, n=24; after the diploidization treatment, the offspring are pure androgenetic diploid \%P. dabryanus\%, the chromosome set numbers are 2n=48.

关 键 词：泥鳅 大鳞副泥鳅 杂交 雄核发育 染色体 人工诱导 

分 类 号：S966.4[农业科学—水产养殖]