Genetic analysis of the characters related to the yield of BC_1 lines of Erianthus arundinaceus

The heritabilities,coefficients of genetic variation and genetic correlation were studied on the characters related to the yield of BC1 lines of E.arundinaceus(Erianthus arundinaceus(Retz) Jeswiet) from GSIRI(Guangzhou Sugarcane Industry Research Institute).The results indicated that cane yield,plant height and stalk diameter showed higher heritabilities,followed by millable canes per plot,and stalk weight had lower heritability.The millable canes per plot,cane yield and stalk weight showed higher coefficients of genetic variation and genetic gains.Whereas plant height and stalk diameter had lower coefficients of genetic variation and genetic gains.The analysis of correlation showed that the contribution of both stalk weight and plant height were important to cane yield,but the latter had higher correlated genetic gains.