优质杂交稻新组合早优11高产制种技术

早优11是广西农科院水稻研究所以新育成的野败型不育系早A与恢复系桂11组配而成的感温型早熟杂交稻组合。该组合产量较高,2004~2006年在广西累计试种700多hm2,一般产量为7500kg/hm2;2005~2006年在广西制种41.3hm2,一般产量可达2625kg/hm2,最高可达3750kg/hm2。该组合米质优,达国标1级优质稻谷标准,并于2006年3月通过广西农作物品种审定委员会审定。文章通过介绍早优11亲本特征特性,总结其高产制种技术及在生产上应用应注意的问题,为在生产上推广提供参考。

High-yielding seed production technique of new good quality hybrid rice Zaoyou 11

Zaoyou 11 is a thermo-sensitive early maturing rice hybrid derived from the newly bred wild abortive type cytoplasmic male sterile(CMS) line Zao A and the restorer line Gui 11 by Rice Research Institute of Guangxi Academy of Agricultural Sciences.The rice hybrid showed a higher yield with good grain quality.During 2004-2006,the planted area of Zaoyou 11 in Guangxi was more than 700 hm2,and the general yield was 7500kg/hm2.Moreover,during 2005-2006,the seed production area of Zaoyou 11 in Guangxi was 41.3 hm2,and the general yield of seed production reached 2625kg/hm2 and the highest was 3750kg/hm2.The grain quality of Zaoyou 11 was up to the first class of China national fine quality rice standards,and it was certified and registered by the Guangxi Committee for Crop Variety Registration in March,2006.The characteristics of parents of new rice hybrid Zaoyou 11 were introduced in the paper,and the high-yielding seeds production technique and key points for commercial production of Zaoyou 11 was also summarized to provide the reference for extension.