Inheritance of the Average Weight of the Fruit in Tomato Hybrids with High Lycopene Content

Abstract

We studied five parental forms of tomato (Solanum Lycopersicum L.). Were obtained twenty F1 hybrids by the complete diallel scheme (5×5) and used to study inheritance of the average weight of the fruit. Were used as parental forms in the system of diallel crosses according to Hayman V. I. and Jinks I. J.: the line №477 (sp, u), variety Alya (sp) and three collection samples with high lycopene content in fruits: Dark green (hp -2dg), MO 112 (hp) and T-3627 (Bc). The results of the evaluation are given of the general and specific combining ability of the five parental forms of tomato of the average weight of the fruit, established the character of inheritance. In the course of research it was found that the average weight of the fruit is controlled by the additive-dominant genetic system. Inheritance occurs by type of incomplete dominance. The main role in the genetic control of the trait is played by the additive effects of genes, which allows for selection, starting with the second hybrid generation. The direction of dominance varies from the dominance of genes that reduce the manifestation of the trait to its absence. The highest reliable effects of general combining ability (GCA) had the variety Alya, which must be used to create heterosis hybrids. From hybrid combinations with his participation in the future it is possible to make selections for creation of varieties.