Inheritance of the height of plants and number of leaves by hybrid combination Virginia tobacco

Abstract

Studied are inheritance, acts of heterosis and transgression, the number of genes and genetic character of Interaction, heritability coefficients, in terms of plant height and number of leaves in crosses Virginia tobacco. For the purpose of the study population are P1, P2, F1 and F2 of seven hybrid combinations. In our study samples Virginia tobacco inheritance of plant height and number of leaves overdominantly or additively, in the direction of the parent with the higher or lower values. Data of the genetic analysis showed that the number of genes affecting the expression of the trait plant height is 13 to 16, and when the number of leaves - 1 or 2. As regards the height of the plants is observed negative epistaz, while the number of leaves and less positive one. Are established a high coefficient of heritability of plant height and number of leaves of a plant. The coefficients for the heritability and efficiency in selection by phenotype indicate that the selection of genotypes with larger values of the height of the plants will be more effective in the F5 - F6, and the genotype of a large number of leaves in the still earlier hybrid generations.

Keywords

• Virginia tobacco
• height of plants
• number of leaves
• inheritance
• hereditability