| Abstract: In order to explore the genetic model of interaction between yield-related traits and genes in eggplant and
provide theoretical basis for effi cient breeding of eggplant, taking green round-eggplant 'Qie 27' inbred lines as the female
parent, long purple eggplant 'Qie31' inbred lines as the male parent, F1 hybrid combinations were prepared and self crossed and backcrossed respectively to construct the six generations of P1, P2, F1, F2, B1 and B2 genetic populations. The
genetic modes of eggplant yield-related traits were studied by using the mixed analysis of major genes and multiple genes. The
results showed that the yield of eggplant was inherited by an additive-dominant pair of major genes, the number of fruit per plant
was inherited by two pairs of additive main genes + additive-dominant polygenes, and the maximum single fruit weight
per plant was inherited by two pairs of additive major genes + additive-dominant polygene. The yield and fruit number
per plant were mainly non-additive inheritance. The number of fruit per plant was dominated by additive effects of two major
genes. In terms of maximum fruit weight per plant, the major genes were mainly inherited additivity in the B1 and F2 generations,
and the heritability of the major genes were 50.48% and 54.33%, respectively. And the B2 generation was mainly inherited by
multi-gene heritability, and the multi-gene heritability was 50.88%. In conclusion, the yield traits of eggplant were affected by
additive and dominant genetic effects. |