Butorac


Die Bodenkultur - Journal for Land Management, Food and Environment

J. Butorac, D. Vasilj,V Kozumplik and J. Beljo:

Inheritance of certain economic and agronomic traits in burley tobacco

Summary

The goal of the investigations was to estimate the manner of inheritance of economic (yield and grade index) and agronomic traits (topping height, plant height, internode length, leaf number and days to flowering) using the components of genetic variance and combining abilities. Four parent burley tobacco cultivars and their 6 F1 hybrids were separated for the needs of this study. The 4-year trial was set up according to the RCBD in 4 replications. Significant GCA and SCA were estimated for all traits, except for days to flowering and GCA also for plant height. Cultivars TN 86 and Poseydon were the best general combiners while Hy 71 x BL1, Hy 71xTN 86 and Poseydonx BL1 were the best specific combinations. According to the components of genetic variance, higher nonadditive variance was estimated for the most traits studied.

Key words:  Nicotiana tabacum L., burley, combining ability, components of genetic variance, economic and agronomic traits.