研究了４０个籼－粳正、反交杂种稻米有关外观和蒸煮食用品质性状的遗传控制。结果表明：杂种稻米粒长和粒宽的遗传表达决定于二倍体的母体基因型，而糊化温度和直链淀粉含量的遗传表达则主要受三倍体的胚乳基因型控制。细胞质效应一般不存在，但ＰＣ３１１（粳）的细胞质对粒长和粒宽，明恢６３（籼）的细胞质对直链淀粉含量有着一定作用。 The genetic control of the appearance and cooking edible quality traits of 40 indica-japonica hybrid rice combinations was studied. The results showed that the genetic expression of grain length and grain width in hybrid rice was determined by the diploid maternal genotype. The genetic expression of gelatinization temperature and amylose content was mainly controlled by the triploid endosperm genotype. The cytoplasmic effect generally did not exist, but the cytoplasm of PC311 (japonica) had a certain effect on amylose content in cytoplasm of grain length and grain width.