Total 59 Japonic rice lines from 9 ecotypes were used as materials in this study, and main quality characters of F1 hybrids of 303 combinations created in a diallel set of cross were analysed.

• 摘要利用9个不同生态类型的59份粳稻亲本材料，以生态型为单位进行双列杂交，配制303个组合，研究各生态类型和杂种主要品质特性。