【摘要】 通过传统的敲片、Giemsa染色的方法,首次对果蝇属黑腹果蝇种组的5种果蝇(D.constricta、D.ohnishii、D.ogumai、D.pseudobaimaii、D.tani)染色体的数目和形态进行了分析报道。分析发现:这5个种具有相同的染色体数目(2n=8)和不同的形态。D.pseudobaimaii和D.tani为2V,1R,1D型;D.constricta染色为2V,1R,1D型且其点状染色体难以辨认;D.ohnishii和D.ogumai具有相同形态为2V,2R。另外,还发现核型与亲缘关系之间有一定的对应性。更多还原

【Abstract】 Based on the traditional knocking-slides and Giemsa-staining methods,this paper firstly analyzed the metaphase chromosomes of five species(D.constricta、D.ohnishii、D.ogumai、D.pseudobaimaii and D.tani) of Drosophila melanogaster species group.The results show that all of the five species share the same chromosomal numbers(2n=8) but with different typical shapes.D.pseudobaimaii and D.tani share the shape 2V,1R,1D;D.constricta shows 2V,1R,1D with unclear recognized dot chromosomes;D.ohnishii and D.ogumai share the same chromosomal shapes 2V,2R.And that between karyotype and phylogenetic relationships are found to be correspond.更多还原