Triple Test Cross Analysis for Some Physio-Morphological Traits in Oilseed Rape (Brassica Napus)

The triple test cross (TTC) analysis of Jinks and Perkins was applied to study the additive (D), dominance (H), and epistatic components of genetic variation for different physio-morphological traits, viz., seed yield/plant, primary branches, secondary branches, pod length and plant height in two crosses of Brassica napus. The results revealed that epistasis was of major importance for seed yield and primary brandies in crass Bronowski × Topa and for primary branches and plant height in cross CSL-1 × Nikalis. The [j & i] type of epistasis was prevalent in both the crosses, Bronowski × Topa and CSL-1 × Nikalis.