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以去壁低渗方法对栽培大豆品种进行了核型分析。结果表明:在大豆的20对染色体中,具中部着丝点染色体有16对,其中一对染色体带有随体;近中部着丝点染色体有4对。其核型分类为2B,核型公式为2n=40=2x=16m(1SAT)+4Sm。
The karyotype analysis of cultivated soybean varieties was carried out by the wall-down hypotonic method. The results showed that among the 20 pairs of chromosomes in soybean, there were 16 pairs of chromosomes with centromeric dots, of which one pair had chromosomes and the other had four pairs of centromeric chromosomes. The karyotype is classified as 2B, the karyotype formula is 2n = 40 = 2x = 16m (1SAT) + 4Sm.