茄子萼片覆刺性状遗传分析OA

To elucidate the genetic mechanism underlying the prickle coverage on eggplant sepals,six genetic populations(P1,P2,F1,F2,B1,B2)were constructed using the prickly line 24C01 and the prickle-free line 24C02 as parents.The number of prickles on sepals in the F1 population was investigated and exhibited a continuous and approximately normal distribution.Genetic analysis was per-formed using the major gene plus polygene mixed inheritance model.The optimal genetic model was identified as MX2-ADI-ADI,which consists of two additive-dominant-epistatic major genes plus additive-dominant-epistatic polygenes.Estimation of genetic pa-rameters indicated that the trait was primarily controlled by two major genes,with heritabilities of 89.70%,80.49%,and 74.64%in the F2,B1,and B2 populations,respectively.The expression of the trait was also influenced by environmental factors.In conclusion,this study provides a detailed analysis of the genetic pattern of calyx bristle traits,which holds significant implications for the directional improvement of eggplant varieties.