两套水稻籼粳交DH群体的亲和性及其遗传分析

以两套水稻籼、 粳交DH群体为材料， 研究了籼、 粳程度及籼、 粳基因组的比例与亲和性 的关系， 结果 表明， 两套群体与籼、 粳测交F1小穗的育性与DH系的籼、 粳程度及基因组比例存在相 关， 但广亲和DH系(与籼和与粳测交F1小穗育性均大于70%)在籼、 粳程度及基因组比例 上的特异性不明显。 通过DH系与籼、 粳测交F1小穗育

The Compatibility and Its Genetic Analysis in Two DH Populations Derived from Indica/Japonica Cross in Rice

With two DH populations derived from Indica/Japonica cross in rice, the rela tion ships between the extent to indica and japonica and the genome ratio and the com patibility were researched. The result showed that although the spikelet fertili ty of crosses between DH lines and indica testers or japonica testers has correl ationship with the extent to indica and japonica and the genome ratio, t he compa tible DH lines whose spikelet fertilities of testing crosses are all equal to or greater than 70% appeared no regular characteristics in the distribution of the extent to indica and japonica and the genome ratio. Preliminary genetic analysi s of isozyme loci for the variance of spikelet fertility of crosses between DH l ines and indica tester of japonica tester indicated that both allele int eractions at one locus and non allelic interaction controlled sterility of hybr id between indica and japonica .