FRACTIONAL DIALLEL ANALYSIS OF SOME QUANTITATIVE CHARACTERS IN BRINJAL

The estimated components of variance revealed that additive gene action was important for number of branches per plant, number of fruits per plant and fruit length in F₁ and plant height and fruit length in F₂ whereas non-additive gene action was predominent for plant height, days to flower, number of fruits per branch, fruit weight, fruit length and yield per plant in F₁, number of branches per plant, number of fruits per plant in F₂ and days to flower, number of fruits per branch, fruit weight and yield per plant in both F₁ and F₂. For fruit girth and fruit shape index, additive genetic variance was larger than non-additive genetic variance in both generations.

PPC, BGL and PPL for fruit yield, PPL and BGL for days to flower, T₂, BGL and Agra special for plant height, T₂ and PPL for fruit length, BBR and BGR for fruit girth; T₃ and 6307 for number of branches per plant; PPC and WB for fruit number per branch; T₃ and BBR for fruit shape index, T₃ and BGR for fruit weight and PPC, WB and PPL for fruit number were found good general combiners.
The rank correlation coefficients were high for all the characters and negative association was observed for number of branches and fruit yield.
Breeding methods such as biparental mating followed by reciprocal recurrent selection are likely to provide greater improvement in such populations.

Symposium on Quality of Vegetables

S.N. Singh, H.N. Singh, M.H. Hazarika

https://doi.org/10.17660/ActaHortic.1979.93.29