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以红莲型不育系丛广41A作不育胞质源供体,采用杂交选育和回交转育的方法,育成了一个新的红莲型优质不育系一粤泰A。该不育系具有以下特性:(1)群体不育株率达100%,不育度达99.86%;(2)柱头外露率达91.6%,制种产量可比珍汕97A高38%至62%;(3)米粒细长,垩白米率仅8%,比珍汕97A减少达78%,配制的杂种在外观品质性状上较珍汕97A组合可提高一个品质等级;(4)较强的感温性,在广州作早、晚造种植,播抽天数分别为92±1.4d和73±2.1d,在南京春播播抽天数为81±2.1d,在海南岛冬播播抽天数为100.5±2d。
A CMS line Cong Cong Guang 41A was used as a source of sterile cytoplasm, and a new CMS line Yuetai A was bred by hybridization and backcrossing methods. The male sterile line has the following characteristics: (1) the rate of sterile plants in the population reaches 100% and the sterility rate reaches 99.86%; (2) the stigma exsertion rate reaches 91.6% and the seed yield can be 38% higher than that of Zhenshan 97A % To 62%; (3) The slender grains and chalkiness rate was only 8%, which was 78% less than that of Zhenshan 97A. Compared with Zhenshan 97A, the hybrids could improve the appearance quality by one grade; (4) Strong sense of temperature, in Guangzhou for early and late planting, sowing days were 92 ± 1.4d and 73 ± 2.1d, sowing in Nanjing spring broadcast days was 81 ± 2.1d, Hainan Island in winter The number of broadcast days is 100.5 ± 2d.