Analysis on Yield Components of Series CMS-FA Hybrid Rice Combinations Derived from Restorer Line Jinhui 3

Relationship between yield and yield components of series CMS-FA hybrid rice combinations derived from restorer line Jinhui 3was studied.It aimed at detecting the yield potential of CMS-FA hybrid rice combinations crossbred with restorer line Jinhui 3.Using 7CMS-FA sterile lines as female parents and corresponding restorers Jinhui 3as male parents, 7crosses were made, along with Shanyou 63as the control, were used for the study.The results showed that series CMS-FA hybrid rice yield an average of 7 877.8kg·hm-2, the majority of combination of yield was significantly or very significantly higher than the control.The yield was significantly positively correlated with total grain number per plant (TGNPP) , and not significantly correlated with effective panicles per plant (PP) , seed-set percent (SSP) and 1000-grain-weight (TGW) .Yield was positively directly affected by TGNPP, and was negatively directly affected by PP and TGW.When using restorer line Jinhui 3to cross CMS-FA hybrid rice combinations, CMS-FA sterile line should be selected within a certain PP, TGW should not be too large as appropriate.