Analysis of Agronomic Traits and Their Combined Trait for Hybrids of Indica Rice

The genotype by environment interactions, and the stability performances of agronomic traits and their combined trait were analysed for hybrid rices in 1991 and 1992 with the methods proposed by Zhu et al. The results indicated that there existed large year by location interactions for most of the studied traits, and genotype by year or genotype by location interactions for some traits. The significant differences among 15 hybrid rices agronomic traits and combined trait showed that the yield for five hybrids (Guangyou 4, Shanyou 63, Ⅱ you 62-16 et al. )was high, and combined trait value for Shanyou 63, W6154/Tesan'ai and Maxieyou 63 was high too. The single traits and combined trait of hybrids which came from different breeding units were compared.