作物学报2016，Vol.42Issue(5)：648-657,10.DOI:10.3724/SP.J.1006.2016.00648
亲本籼粳成分与两系杂交粳稻杂种优势的关系及遗传基础
Relationship between Indica-Japonica Index of Parents and Heterosis of Hy-brid and Its Genetic Basis inJaponica Two Line Hybrid Rice
摘要
Abstract
In order to further reveal the relationship between composition of subspecies lineage and heterosis in Oryza sativa L., we built a bridge for morphological index, Cheng's index (Chi) and molecular index,japonica discrimination values (Dj) based on two populations, a recombinant inbred lines (RILs), derived from the cross between indicacultivar Qishanzhan andjaponica cul-tivar Akihikari, and japonica photo-thermo sensitive genic male sterile (PTGMS) line GB028S and their F1 hybrids. Two indexs achieved relatively consistent results in two populations independently. Significant curvilinear relationship appeared among Dj values, F1 yield and yield heterosis. The peaks of F1 yield and yield heterosis were detected in Djinterval from 0.55 to 0.70 and from 0.50 to 0.65 respectively, indicating that 0.55?0.65 is the preferentialDj interval for producing high yield and heterosis of F1 hybrids. Compositions of subspecies lineage on Chr.8, Chr.11, and Chr.12 were closely related with yield and heterosis of F1, however, the relationship among parent's genetic distance, F1 yield and heterosis was not significant.关键词
重组自交系/两系杂交粳稻/杂种优势/籼粳成分Key words
RIL/Two-line hybrid rice/Heterosis/Indica-japonica composition引用本文复制引用
于亚辉,刘郁,李振宇,陈广红,徐正进,唐亮,毛艇,徐海..亲本籼粳成分与两系杂交粳稻杂种优势的关系及遗传基础[J].作物学报,2016,42(5):648-657,10.基金项目
本研究由辽宁省农业领域青年科技创新人才培养计划(2015034, 2014046)和辽宁省科学技术计划项目(2014020004-101)资助. This study was supported by the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province (2015034, 2014046) and the Science and Technology Items of Liaoning Province (2014020004-101). （2015034, 2014046）
