摘要
[目的]比较辽宁雏蝗(Chorthippus liaoningensis Zheng)3个不同地理种群(长白山种群、敦化种群、漠河种群)的染色体核型及C带带型.[方法]染色体常规压片法制片,使用BSG法处理染色体C带显带.[结果]辽宁雏蝗3个不同地理种群具有相同性别决定机制XO型,相同染色体数目2n(♂)=17,NF=23.3个地理种群染色体组式相似,染色体核型相同都为“1C”核型.在C带带型方面,3个地理种群的C带带型都比较单一,都仅具有着丝粒带.在异染色质总含量方面三者存在着差异.[结论]基于3个地理种群染色体核型及C带带型的特点,说明3个不同地理种群的辽宁雏蝗为同一种,但因为地理位置不同,同种内不同地理种群染色体C带带型存在一定差异.
Abstract
[Objective] The aim was to compare chromosomal karyotypes and C-banding karyotypes of Chorthippus liaoningensis Zheng in three geographic populations.[Method] BSG method was used to carry out the banding treatment.[Result] The three geographic populations had the same chromosomal karyotypes of "1C" type and the same sex-determining mechanism of XO and the same chromosome number 2n(♂) =17 with NF =23.In C-banding,the three geographic populations all had centromeric band with different heterochromatin content.[Conclusion] In view of the chromosome karyotypes and the characteristics of C-banding,the three geographic populations are the same specie.Because the distinct geographical environments,slight differences in C-banding karyotypes are apparent anong the three populations.
国家科技期刊平台
NSTL
维普
万方数据