Genetic Variation for Physiological Traits in Rapeseed

Jinks and Perkins[1] analysis was applied to study the additive (D), dominance (H), and epistatic components of variation for different physiological traits, viz., pod Intensity (PI), seed: husk ratio (SHR), seed: husk nitrogen ratio (SHNR), harvest index (HI) and nitrogen harvest index (NHI) in two crosses of Brassica napas. In general, dominance component (H) was relatively more important than the additive component. Epistasis) was of major importance in cross Bronowski × Topa. The j and i types of epistasis was prevalent for majority of characters while (i) type was nonsignificant in both crosses.