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根据13个亲本146个F_1的花粉育性和小穗育性,研究了亚洲栽培稻三个生态型(布鲁、奥斯及陆稻)的遗传亲和性。F_1花粉育性的变动范围为49.7—99.9％,小穗育性则为9.7—96.5％。F_1育性和某一特定亲本有关,Kinandang Patong等亲本一般配合力较低,后代育性差;63—83等亲本配合力高,杂种育性亦高。生态型内已有遗传分化,陆稻的遗传分化大于奥斯和布鲁。杂种花粉育性的平均数布鲁×陆稻为85.5％,奥斯×陆稻为85.3％,布鲁×奥斯为83.2％,说明三个生态型杂交亲和性高,亲缘相近。杂种小穗育性的平均数则为:陆稻×奥斯77.7％,陆稻×布鲁70.4％,布鲁×奥斯65.3％。陆稻与布鲁及奥斯的亲和性略高于布鲁与奥斯。7×7双列分析扩大了品种间差异,计算的遗传组成表明,F_1育性变动可主要归因于加性及显性效应。
Based on the pollen fertility and spikelet fertility of 146 F1 progenies from 13 parents, the genetic compatibility of three ecotypes of Asian cultivated rice (Brouss, Ostrich and Upland) was studied. F_1 pollen fertility ranged from 49.7 to 99.9%, while spikelet fertility ranged from 9.7 to 96.5%. F_1 fertility and a particular parent related, Kinandang Patong and other parents with lower general combining ability, poor offspring sex; 63-83 and other parents with high combining power, hybrid fertility is also high. There is genetic differentiation within ecotypes, and the genetic differentiation of upland rice is greater than that of Osborne and Blues. The average number of hybrid pollen fertility was 85.5% in Luxi × Upland rice, 85.3% in Luxi × Oryza rufipogon, and 83.2% in Luxi × Oryza sativa, indicating that the three ecotype hybrids had high affinity and similar genetic relationship. The average number of hybrid spikelet fertility was: Upland rice O. 77.7%, Upland rice 70.4%, Bruce Oster 65.3%. Upland rice and Bruce and the Austrian affinity is slightly higher than the Bruce and Ossetian. The 7 × 7 double-row analysis expanded the differences among cultivars. The calculated genetic composition indicated that the change of F 1 fertility was mainly attributed to additive and dominant effects.