Chinese Journal of Rice Science

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Studies on Earliness of Indica-Japonica Hybrid Rice

Cao Liyong; Shen Zongtan   

  • Received:1900-01-01 Revised:1900-01-01 Online:1997-07-10 Published:1997-07-10

籼粳杂交稻早熟性的研究

曹立勇;申宗坦   

  1. 浙江农业大学农学系, 杭州 310029

Abstract: The growth period duration of indica-japonica hybrid rice is often very long, which made it difficult to select fine suitable crosses for double seasonal hybrid rice. Using male sterile line Zaoxian A with a dominant earnness gene as a parent could reduce growth period duration for about 17 days, while grain yield might not decrease significantly.

Key words: earliness, indica-japonica hybrid rice, rice

摘要: 1994年用粳稻广亲和品种02428、ZH157、ZH110 分别和珍汕97A杂交,从回交后代中选得同质广亲和恢复系02428R(珍汕97A/024283 F5),ZH157R(珍汕97A/ZH1572 F6)和ZH110R(珍汕97A/ZH1103 F3 )3份,将上述同质广亲和恢复系分别与籼稻WA 胞质不育系珍汕97A 、珍育29A、早显A、矮败型胞质不育系协青早A 杂交,分析F1 的生育期。1995年用02428R等广亲和恢复系和明恢63 等籼型恢复系与早显A 、协青早A杂交,分析F1 的生育期等性状。通过具有早熟效应的早显A不育系与不同恢复系杂交,发现早显A可显著缩短杂交稻组合的生育期,但对产量影响不大,说明选育具早熟效应的不育系对于缩短杂交水稻的生育期具有一定的价值。

关键词: 水稻, 籼粳杂交稻, 早熟性