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对自1972年以来,通过花药培养所获得的近千株花粉植株的倍数性和部分来源于杂种F_1的花粉植株的纯合性及性状遗传规律进行了研究。结果观察到60％的花粉植株为能正常结实的二倍体。90％来自F_1的花粉植株的后代是整齐一致没有分离的,也即在遗传上是纯合的。其余10％来自F_1的花粉植株的后代或在性状上、或在能育性上、或同时在性状与能育性上发生分离。但性状分离一般都较简单,与F_2的分离有明显区别。对来源于同一杂交组合F_1的49个花粉植株的四个性状的重组与分离的规律,以同组合F_2植株为对照,进行了研究。结果两者表现基本相似。说明杂种F_1的各种小孢子发育为花粉植株的机率是相同的,没有发现在培养过程中不同基因型的花粉间有明显的竞争。 通过花粉单倍体育种已培育出二个粳稻新品种在生产上繁殖推广。
Since 1972, the multiplicity of nearly one thousand pollen plants obtained through anther culture and the homozygosity and genetic inheritance of pollen plants partially derived from hybrid F1 have been studied. As a result, 60% of the pollen plants were observed to be normally diploid diploid. Ninety percent of the progeny of F_1 pollen plants are neat and unrecorded, ie they are homozygous. The remaining 10% of F1 progeny from the pollen plants were either traitwise or fertile, or both trait and fertility segregated. However, trait separation is generally simple, with the separation of F_2 significant difference. The regulation and isolation of the four traits of 49 pollen plants from the same hybrid F1 were studied with the same combination of F2 plants. The results of the two basically similar. The results showed that there was a similar probability that all kinds of microspores of hybrid F1 would develop into pollen plants. There was no obvious competition among the pollens of different genotypes during culture. Two new japonica rice cultivars have been bred and propagated in production through pollen haploid breeding.