Abstract:

The correlation degree between economic traits and yield of two indica rice combination were studied by gray correlation degree analysis. According to the results, the correlation degree between yield and other traits of panicle and spikelet type could conclude as follows: number of filled grains > seed setting rate > number of efficient tillers > 1000-grain weight > whole growth period, which indicated that the number of filled grains was the major factor of the yield of this type of combination. The results of heavy panicle type were as follows: number of efficient tillers > number of filled grains > seed setting rate > 1000-grain weight > whole growth period, which indicated that the number of efficient tillers was the major factor of the yield of this type of combination.