Gene effects implied in manifestation of the some quantitative traits at the tomato

Abstract

n the article are presented the results ofthe research onthe genetic effects involved in the manifestation of some quantitative characters to tomatoes. It has been established that the various actions (aditive -a, dominant -d) and epistatic interactions (aa, ad, dd) of the genes vary in their degree and orientation (+/-), and depend on the combination, traits and participate to the inheritance of morphobiological and agronomic traits of tomatoes. Duplicate epistasis play an important role in forming the phenotype of these characters in most combinations. As a result of the clustering analysis of the degree of association of the characters mean in the F2 population with the investigated gene effects, it was found that in all cases, the F2media displayed a high associative association with epistasis ad. The broad spectrum of gene effects involved in the formation of the phenotype of morphobiological and agronomic features highlights their genetic basis which considerably contributes to the targereof tomato breeding.