Division of Genetics, Indian Agricultural Research Institute, New Delhi 110012.
Absence of epistasis was noticed in some cross combinations between semidwarf/dwarf and tall wheats for grain yield per plant, ear length and grains/ear. Duplicate epistasis of additive x dominance interaction was involved for plant height and 1000-grain weight in some crosses. However, plant height and grain weight per ear was governed by additive x additive gene action in one cross, while it was due to dominance x dominance gene interaction in other cross.
Epistasis, additive x additive, additive x dominance, duplicate epistasis, wheat
