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恒达A是以D62B为母本、IR58025B为父本的杂交后代F2选株与龙特甫B进行复交选育的保持系再与珍汕97A转育而成的籼型三系不育系。于2014年通过福建省农作物品种审定委员会审定(闽审稻2014025)。该不育系不育性彻底,异交率高,穗大粒多,分蘖力强,配合力好。本文介绍了不育系恒达A的选育过程、主要生物学特性及配制杂交水稻新品种的表现。
Hengda A is an indica three-line CMS line with D62B as the female parent and IR58025B as the male parent’s F2 progeny with Longtefu B in the crossbreeding and then with Zhenshan 97A. In 2014 through the Fujian Provincial Crop Variety Approval Committee (Min Zhaodao 2014025). The sterility of male sterile lines was complete with high rate of outcrossing, large spikelets, strong tillering ability and good combining ability. This article introduced the breeding process of Hengda A, the main biological characteristics and the performance of new hybrid rice varieties.