早熟强优势籼稻恢复系恢92的选育及配组应用研究

Breeding and utilization of an indica restorer line for early and strong restoring ability of Hui 92 and hybrids

利用国际水稻所培育的品系IR209作母本,与强恢复系测64-7杂交配组,定向选育成早熟恢复系恢92。该恢复系具有生育期较短,米质较优,且恢复谱广,恢复力强,配合力高等特点。所配组合汕优92、Ⅱ优92、协优92均通过浙江省审定,其中Ⅱ优92、协优92通过安徽省审定,Ⅱ优92通过全国审定。

A new early restorer line, Hui 92, was developed from the cress of IR209 and strong restoring line Ce 64-7. The advantages of the restorer line are shorter growth and development period, better rice grain quality, high combining ability, streng restoring ability, and wide restoring spepctrum. The hybrids crossed from hui 92 showed good grain quality, stable high yielding, and good lodging resistance. Among these hybrids, Xieyou 92 and Ⅱ you 92 were examined and approved by Zhejiang and Anhui provinces, whereas Ⅱ you 92 were examined and approved by China.