The purple strain F₄ of Hyriopsis cumingii was produced using intraspecific hybridization assisted by populations breeding for four generations with the breeding indexes of the inner shell color and body weight.In this paper,six polymorphic microsatellite markers were employed to identify the male parents of offspring from 15 female parents of the purple strain F₄.Parentage assignment showed that 42 full-sib families from 12 male parents and 15 female parents were obtained.Heritabilities,genetic correlations and phenotype correlations for inner shell color and growth traits were estimated using AS REML method during one year old stage.The heritability estimates of the color parameters L^*,a^*,b^*,dE^* were 0.31±0.22,0.11±0.08,0.36±0.18,0.29±0.19,respectively.The genetic correlations and phenotypic correlations of L^*,a^*,b^* were low,with the ranges of 0.08-0.47 and 0.04-0.32,but the correlations between L^* and dE^* were very high(r_g=-0.94±0.06,r_p=-0.96±0.01).The heritability estimates for shell length(0.24±0.19),shell height(0.37±0.27),shell width(0.26±0.16),wet weight(0.26±0.17),and shell weight(0.31±0.19)were moderate and high.A positive and high genetic correlation and phenotypic correlation were found among growth traits(r_g=0.71-0.92,r_p=0.66-0.94).The genetic correlations and phenotypic correlations between the color parameters and growth traits were very low,ranging from 0.02 to 0.18.The results showed that most of the heritabilities of color parameters and growth traits were moderate and high,which suggested that this strain should respond rapidly to selective breeding.Mutual selection couldn't be achieved due to the low correlations between inner shell color and growth traits,and the body weight should respond to targeted selection with the high phenotype correlations and genetic correlations with other growth traits.Therefore,selective breeding for inner shell color and body weight was a reasonable method to improve inner shell color and growth traits at the same time.