摘要
采用PHA和秋水仙素体内注射法 ,以鳃组织为材料 ,低渗—空气干燥法制片 ,对文蛤的染色体进行了分析研究。结果表明 ,文蛤染色体绝对长度较小 ,为 0 .91～ 1.96 μm ;其二倍体数目为 2n =38,核型公式为N =18m +14sm +6t,染色体总臂数NF =70。同时 。
The mitotic chromosomes and karyotype of the bivalve, Meretrix meretrix were studied in this paper.The chromosomes were analysed by injecting PHA and colchicine in the M. meretrix. They were gained from the gill cells by low permeating and drying in the air. The absolute length of the chromosome was only 0.91-1.96μm.The diploid chromosome numbers were 38. According to the relative length and arm ratios,the diploid set of chromosomes was divided into 3 genomes. The chromosome formula was N=18m+14sm+6t.The fundamental number of chromosome arms(NF) was found to be 70. The phylogenetic relationships among the Veneridae were preliminarily discussed as well.
出处
《上海水产大学学报》
CSCD
2002年第2期106-109,共4页
Journal of Shanghai Fisheries University
关键词
文蛤
染色体
核型
Meretrix meretrix
chromosome
karyotype
