COMPONENTS OF THE GENETIC VARIANCE AND GENETIC CORRELATIONS BETWEEN TRAITS IN MANGO

Phenotypic and genetic variance components for mango (Mangifera indica ) traits were estimated. The analyzed population composed of 745 proge ny derived from both controlled crosses and open pollination. The aver age percent of selfing was estimated from the statistical model to be 50%. Both the additive and the dominance (non-additive) genetic varian ce components were calculated. In all 13 traits analyzed, 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 dete cted and in one pair of traits, significant genetic correlation was fo und, Conclusions for mango breeders are discussed with the main recomm endation being to widen the genetic background of the breeding populat ion. (C) 1998 Elsevier Science B.V.