水稻红莲型不育系粤泰A在杂交稻育种中的利用特性

• 作 者: 李传国 伍应运 梁世湖 符福鸿 黄德娟
• 机 构: 广东省农业科学院水稻研究所
• 出 处: 杂交水稻
• 发表日期: 1998年04期
• 关键词: 红莲 颖花数 中粳 柱头外露率 自交结实率 利用特性 粤泰A 雄性不育性 穗期 野败型

试验初步阐明了水稻红莲型不育系粤泰Ａ在杂交稻育种中具有以下特点：（１）稳定的雄性不育性，在南京１９９４年和１９９５年的８月１５～３０日镜检其花粉可育率均低于１．５％，套袋自交结实率低于０．０８％；（２）良好的制种性状，该不育系的柱头外露率达９７％，异交结实率６１．５％±９．８％，每平方米颖花数达４２１７９个，均极显著地高于珍汕９７Ａ；（３）该不育系与中粳广亲和系配组杂种出穗期表现受积温影响较大，而受日长变化影响较小，呈现明显的感温特性。因此，可以预见该类组合在生产上具有较广泛的生态适应性。

The experiment preliminarily clarified that Yuetai A, an HLR-type CMS in rice, has the following characteristics in hybrid rice breeding: (1) Stable male sterility, microscopically examined in Nanjing from August 15 to August 30, 1994 and 1995 The fertility of pollen was less than 1.5% and the selfing rate of bagging was less than 0.08%. (2) Good seed-setting traits, the stigma exsertion rate of this CMS was 97% 61.5% ± 9.8%, and the number of spikelets per square meter reached 42179, which were significantly higher than that of Zhenshan 97A. (3) Accumulated temperature greater impact, but less affected by changes in the Japanese long day, showing obvious temperature characteristics. Therefore, it can be predicted that such combinations have broader ecological adaptability in production.