Genetic Analysis of Fruit Traits in Wolfberry (Lycium L.) by the Major Gene Plus Polygene Model

The fruit diameter (FD), length (FL), peduncle (FPL), weight (FW) and index (FI, FL/FD) are important quantitative traits in wolfberry fruit, also one of the most goals variety breeding; however, inheritance these has not been studied to date. In this study, genetic analysis five was undertaken for four pairs F1 hybrid populations (CI, CII, CIII CIV) using major gene polygene mixed model. results showed that exhibited super-parent segregation combinations, progeny with abundant diversity. CIV, mid-parental heterosis ratio (RHm%) FD, FL, FPL FI greater than 0 positive heterosis. FL CI, CII were controlled by pair additive-dominant genes (A-1). However, FD two alleles (B-6) best fitted polygenic control (A-0). addition, it found CIV or (A-1, B-6, B-1), FW controls B-1). For FPL, heritability over 50%, indicating affected both environment, selection should be considered later generations due large effect environmental factors. Therefore, study provides a theoretical basis QTL mapping early breeding Lycium fruits.