扬州大学学报（农业与生命科学版）2011，Vol.32Issue(2)：36-41,6.
恢复系R6547系谱的籼粳分化与杂种优势关系的分析
Analysis on relationship between indica-japonica differentiation in restorer line R6547 pedigree and heterosis
摘要
Abstract
In this study, the Cheng's index (CHI) and SSR (simple sequence repeats) molecular markers were used to study indica-japonica differentiation in restorer liner R6547 genealogical materials of Fengyouxiangzhang hybrid rice. The parental CHI and PJC (partial japonica coefficient) ranged from 6 - 18, 0. 13 -0. 24, respectively. Some parents were differed in classification by CHI and PJC. The correlation analysis showed that a positive correlation was identified between CHI, PJC and spikelets per panicle, fertile spikelet number, yield per plant of parents and hybrid F1, which indi- cated that increasing japonica content in parent was the important factor for realizing high-yield hybrid F1. At the chromosome segment level, japonica content at the chromosome 4, 9 will benefit the formation of yield heterosis. As the same yield component factor is influenced by japonica genetic factors at multi-chromosome, japonica genetic factors at the same chromosome influence multi-yield component factors. So, the proper percentage and reasonable distribution of indica and japonica genetic factors in R6547 are the key to realize heterosis.关键词
水稻/杂种优势/程氏指数/SSR标记/籼粳分化Key words
rice/heterosis/Cheng's index/SSR marker/indica-japonica differentiation分类
农业科技引用本文复制引用
肖宁,张洪熙,戴正元,潘存红,刘广青,张小祥,余玲,李爱宏..恢复系R6547系谱的籼粳分化与杂种优势关系的分析[J].扬州大学学报（农业与生命科学版）,2011,32(2):36-41,6.基金项目
江苏省科技支撑计划项目(BE2008352) （BE2008352）
