高异交率强配合力籼稻三系不育系祥A的选育

摘要

祥 A (原名泉7A)系以V41B/闽泉2号的F1为母本,金23B为父本复交选育的保持系,与不育系珍汕97A测交,经过多代回交选育而成的野败籼型三系不育系。经多年观察试验表明,祥 A 具有育性稳定、异交率高、谷粒细长、配合力强等特点,2014年通过福建省农作物品种审定委员会审定(闽审稻2014023)。%Xiang A (aka Quan 7A),an indica rice CMS line,was bred by crossing V41B,Minquan 2,Jin 23B,and Zhenshan 97A through successive backcrossing for several years.It was registered and released for commercial applications in Fujian in 2014. It exhibited the desirable characteristics of stable complete sterility,high out-crossing rate,long and slender grain,and fine combining capacity.