Studies on plants height inheritance in Burley tobacco crosses

Yovko Dyulgerski, Dimitar Dimanov

Abstract: The character and extent of the genetic interactions were determined by applying hybridological analysis as well as by the number of genes differentiating between the initial parent forms and expressions of heterosis and transgression referring to the feature height of plants, the objective being the selection of desired genotypes in six hybrid Burley tobacco populations, involving indigenous and introduced varieties. The results of the survey of Р1, Р2, F1 and F2 proved that the feature height of plants in Burley tobacco crosses is inherited over dominantly, the parent with higher values dominating. The environment affects is highly on the expression of the feature. The established low coefficients for inheritance of height of plants and effectiveness of selection by phenotype showed that the selection of genotypes characterized by a greater would prove to be more effective in the later hybrid generations.

Keywords: Burley tobacco; genetic analysis; hereditability; heterosis; inheritance; transgression

Date published: 2017-07-07