Components of the genetic variance and genetic correlations between traits in mango.
Lavi U., Tomer E., Gazit S., Hillel J.
Author Affiliation: ARO, Volcani Center, P.O. Box 6, Bet-Dagan, 50250, Israel.
Scientia Horticulturae 75 : 11-25
Abstract : Phenotypic and genetic variance components for mango (Mangifera indica) traits were estimated. The analysed population composed of 745 progeny derived from both controlled crosses and open pollination. The average percentage of selfing was estimated from the statistical model to be 50%. Both the additive and the dominance (non-additive) genetic variance components were calculated. In all 13 traits analysed, the additive genetic variance components were not statistically significant while in eight of the traits the dominance genetic variance was significant. In three pairs of traits, significant phenotypic correlation was detected and in one pair of traits, significant genetic correlation was found. Conclusions for mango breeders are discussed with the main recommendation being to widen the genetic background of the breeding population.