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用４８对ＳＳＲ引物和５０个ＲＦＬＰ探针对来自６个生态型的５７份水稻材料之间的遗传差异进行了比较分析，从单个位点的等位基因数和平均基因多样性看，ＳＳＲ的多态性要高于ＲＦＬＰ。从遗传距离看，在总计 １５９６对材料的遗传距离中，只有 １４４对（占９％）用 ＲＦＬＰ标记估计的遗传距离（简称ＧＤＲＦＬＰ，下同）高于用ＳＳＲ标记估计的遗传距离（简称ＧＤＳＳＲ，下同），平均高出的幅度为０．０３７１，而有 １４５２对（占 ９１％）材料间的 ＧＤＲＦＬＰ，高于 ＧＤＲＦＬＰ，平均高出幅度为０．２４９２。无论是籼、粳亚种内还是籼粳亚种间，ＳＳＲ标记比ＲＦＬＰ估计的遗传距离高．如用ＳＳＲ标记估计的籼稻亚种内材料之间平均遗传距离为０．５４８３，而ＲＦＬＰ标记估计的只有０．２７７６；粳稻亚种内ＳＳＲ平均遗传距离为０．５７７７，ＲＦＬＰ的只有０．２４０５；用ＳＳＲ和ＲＦＬＰ估计的亚种间的平均遗传距离分别为０．８０７４和０．７３１。成对材料的ＳＳＲ遗传距离与ＲＦＬＰ遗传距离之间的相关分析表明，对于典型的籼粳品种，这两种标记估计的遗传距离相关系数较高，而中间型材料或偏籼偏粳材料的相关程度较低。通过分析４个两系不育系与４８个恢复系之间的遗传距离与Ｆ
48 pairs of SSR primers and 50 RFLP probes were used to compare the genetic differences among 57 rice materials from 6 ecotypes. According to the number of alleles and the average genetic diversity of single locus, SSR Polymorphism is higher than RFLP. From the genetic distances, only a total of 1596 genetic distances (9%) were estimated to be higher than the genetic distance estimated by SSR markers (referred to as GDSSR, The same below), the average amplitude was 0.0371, and 1452 pairs (91%) of the GDRFLP between materials, higher than the GDRFLP, an average height of 0.2492. The SSR markers were higher than those estimated by RFLP in both indica and japonica subspecies or between indica and japonica subspecies. For example, the average genetic distance of indica subsp. Japonica subspecies estimated by SSR markers was 0.5483, while that of RFLP markers was only 0.2776. The average SSR of japonica subspecies was 0.5777 and that of RFLP was only 0.2405 The average genetic distance between subspecies estimated by SSR and RFLP was 0.8074 and 0.731, respectively. The correlation analysis between SSR genetic distance and RFLP genetic distance of paired materials showed that the correlation coefficient of genetic distance between the two markers was high for typical indica and japonica varieties, To a lesser extent. By analyzing the genetic distance between four lines and 48 restorers,