优质水稻三系不育系裕A的选育及应用

Breeding and Application of High-quality CMS Line Yu A in Rice

裕A是以早籼稻种质Z173与常规稻品种特籼占25杂交,选育出新保持系裕B,再与珍汕97A杂交,并经多代连续回交选育而成的优质三系不育系。该不育系育性败育彻底、以典败花粉为主,稻米品质达国标3级,同时具有株型较好、茎秆粗壮、早生快长、穗大粒多、异交习性好等优点。2010年通过广东省农作物品种审定委员会技术鉴定。目前已配制15个裕优系列组合通过广东省农作物品种审定。

Yu A, derived from the testcross between Zhenshan 97A and Yu B(a maintainer line developed from crossing the early indica germplasm Z173 with the conventional rice variety Texianzhan 25) and followed by successive backcrosses, is a high-quality CMS line in rice. It is completely male sterile with most of typically abortive pollen grains, and its grain quality reaches the third grade of national standards for high quality rice. It also has the advantages of good plant type, thick stems, early and fast growth, large panicles with many grains and good outcrossing habits. In 2010, it was technically identified by Guangdong Crop Variety Appraisal Committee. There have been 15 Yuyou series of hybrid combinations registered and released by Guangdong Crop Variety Appraisal Committee.