本文比较了花培籼粳交恢复系泸恢17的7个姊妹系主要性状的表型和遗传差异,结果表明,姊妹系间表型值仅每穗实粒数、结实率及千粒重3个性状差异达显著水平。配合力分析表明,这些姊妹系间单株粒重、单株有效穗、结实率、千粒重及穗长5个性状的一般配合力存在显著或极显著差异,株系间的遗传差异大于表型差异。本文还对花培技术在选育实用籼粳交恢复系上的应用进行了讨论。 In this paper, we compared the phenotypic and genetic differences of the main traits of seven sister lines of Huahui indica-japonica restorer Luhui17. The results showed that there were only three traits per plant, such as seed number per panicle, seed setting rate and 1000-grain weight The difference reached significant level. Combining ability analysis showed that there was significant or extremely significant difference in the general combining ability between the sibling lines per plant weight, effective panicle per plant, seed setting rate, 1000-grain weight and spike length. The genetic differences between the lines were greater than those between the lines . The paper also discussed the application of flower cultivation technology in the breeding of practical indica-japonica hybrid restorer system.