《植物生理学报》 2011, 47(8): 799-802

籼粳稻杂交后代花时性状的QTL分析

马作斌¹, 詹瞻², 徐海^1,*, 徐正进¹, 毛艇³, 朱春杰¹, 郭艳华¹

沈阳农业大学1水稻研究所, 农业部作物生理生态遗传育种重点开放实验室, 辽宁省北方粳稻遗传育种重点实验室; 2农学院, 沈阳110866; 3辽宁省盐碱地利用研究所, 辽宁盘锦124200

通信作者：徐海；E-mail: chinaxuhai@163.com；Tel: 13709844728

摘　要：

研究典型籼稻品种‘七山占’和典型粳稻品种‘秋光’杂交衍生的重组自交系群体及其双亲的花时性状, 并用该群体的 分子连锁图谱进行QTL分析, 共检测到6个与水稻花时性状相关的QTL, 包括1个始花时QTL、3个盛花时QTL和2个终花时 QTL, 分别位于第1、2、7、8、10和12染色体, 单个QTL的贡献率在7.08%~26.95%之间。有4个增效等位基因来源于粳型 亲本‘秋光’, 2个来源于籼型亲本‘七山占’。

关键词：水稻; 数量性状基因座; 花时

收稿：2011-05-18   修定：2011-07-25

资助：国家高技术研究发展计划(863计划)项目(2010AA10-1303-2)、辽宁省创新团队项目(LT2010095)和辽宁省博士启动基金(20101102)。

QTL Analysis on Flowering Time in Filial Generations of Cross between Indica and Japonica Rice

MA Zuo-Bin¹, ZHAN Zhan², XU Hai^1,*, MAO Ting³, ZHU Chun-Jie¹, GUO Yan-Hua¹, XU Zheng-Jin¹

¹Rice Research Institute, Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding of Ministry of Agriculture, Key Laboratory of Northern Japonica Rice Breeding of Liaoning Province; ²College of Agronomy, Shenyang Agricultural University, Shenyang, Liaoning 110866, China; ³Liaoning Provincial Saline-Alkali Land Utilization and Research Institute, Panjin, Liaoning 124200, China

Corresponding author: XU Hai; E-mail: chinaxuhai@163.com; Tel: 13709844728

Abstract:

QTLs for flowering time were identified in the population derived from a cross between typical japonica rice ‘Akihilari’ and indica rice ‘Qishanzhan’. Totally, 6 QTLs for the flowering time of rice were identified and mapped on chromosome 1, 2, 7, 8, 10, and 12, respectively. One putative QTL for flowering-begintime was located on chromosomes 12. Three putative QTLs for vigorous-flowering-time were located on chromosomes 1, 8 and 10. Two QTLs for flowering-end-time were located on chromosomes 2 and 7. The contribution of single QTL was between 7.08%-26.95%. There were four efficiency alleles from the typical japonica rice ‘Akihilari’ and two efficiency alleles from indica rice ‘Qishanzhan’.

Key words: Oryza sativa; QTL; flowering time