背角无齿蚌染色体组型的研究

STUDY ON THE KARYOTYPE OF ANODONTA WOODIANA WOODIANA (BIVALVIL,UNIONIDAE)

以背角无齿蚌 (Anodontawoodianawoodiana)的胚胎为材料 ,采用秋水仙素—低渗处理—空气干燥法制备染色体标本 ,对该蚌的染色体组型进行研究。结果表明 ,背角无齿蚌二倍体染色体数为 2n =38,NF =76,核型为 18m +2 0sm 。

Metaphase chromosome specimens of Anodonta woodiana woodiana is prepared from embryo tissues with air-drying technique.Its diploid chromosome number is 2n=38.Karyotype consists of 18 m+20 sm,NF=76.The sexual difference of chromosome is not observed.