优质不育系嘉浙A的选育与应用

嘉浙A是用优质早籼嘉浙B(代号Y33)作轮回亲本,与野败型不育系珍汕97A连续回交育成.1999年7月通过浙江省科委组织的技术鉴定.嘉浙A的主要特性如下:①米质优:据农业部稻米及制品质量监测中心化验的十项米质指标中,嘉浙A有六项达国家优质籼米一级标准,四项达二级标准.②不育性稳定:嘉浙A不育株率100%,不育度99.98%,符合籼型不育系的育性标准.③性状优良:嘉浙A穗型大,配合力好,花时早而集中,柱头外露率高,制,繁种产量较高.

Breeding of fine quality CMS line Jiazhe A

Jiazhe A is a WA type fine quality indica CMS line developed successively through crossing Jiazhe B (No:Y33) to Zhenshan 97A and backcrossing with Jiazhe B as the recurrent parent. It was technically certified in Zhejiang in July 1999. Quality indexes of JiazheA were analyzed and six of ten indexes were fine to meet the first class standards of GB/T 17891 1999, and other four indexes meet the second class standards. The rate of male sterility plant was 100 percent and the sterility degree was 99.98 percent as the result of the technically certify. JiazheA has good characters such as large panicle, early and concentrate anthesis time and high rate of stigma exsertion rate,higher yield in its multiplication and hybrid seed production.