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利用形态指数和同工酶标记对两套籼粳交双单倍体（ｄｏｕｂｌｅｄｈａｐｌｏｉｄ，ＤＨ）群体进行分类，结果两套群体均表现为从籼到粳的连续分布，大多数为偏籼或偏粳的中间型。ＤＨ系的中间型表现主要是因为籼粳基因组交换重组增加了群体平均基因多样性及降低了群体的非随机组合Ｒ２值。６个形态性状与８个同工酶位点间的典型相关分析结果表明，这两种鉴别籼粳的分类方法之间有着非常密切的相关关系。两套群体的同工酶Ｐｊ值和形态指数总分均与基因组的亲本比例有着显著或极显著相关关系，这表明两种方法均能反映整个基因组的籼粳分化情况。
Two morphological index and isoenzyme markers were used to classify two populations of doubled haploid (DH) populations. The results showed that both populations showed continuous distribution from indica to japonica, most of them were indica or japonica The middle type. The DH type intermediate phenotype was mainly due to the exchange and recombination of indica and japonica genomes increasing the average genetic diversity of the population and reducing the non-random combination R2 value of the population. Canonical correlation analysis between six morphological traits and eight isozyme loci showed that there was a close correlation between the two classification methods for identifying indica and japonica. The two groups of isozymes Pj values and morphological index total score with the proportion of the parental genome has a significant or very significant correlation, indicating that the two methods can reflect the entire genome of indica japonica differentiation.