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729是嘉南粳／KetanNangka／／02428／明恢72杂交选育而成的灿粳交广亲和恢复系。与灿稻测交，平均结实率为87．7％，变幅为84．3％～90．8％；与粳稻测验种杂交，平均结实率为82．1％，与稻型三系不育系配组，平均结实率为83．0％。
729 is a hybrid rice variety of Canjing japonica / Ketan Nangka // 02428 / The average seed setting rate was 87.7% and the amplitude ranged from 84.3% to 90.8% with hybrid rice. The average seed setting rate was 82.1% Department of the system, the average seed set rate was 83.0%.