Division of Vegetable Crops, Indian Agricultural Research Institute, New Delhi, 110 012
Six genetic populations (two parents, one each Fi and F2 and two backcros-ses) of three crosses, each for T. S. S. and rind thickness were raised during 1975 at the Division of Vegetable Crops, I. A. R. I., New Delhi. Generation means and gene AA effects were estimated. Dominance gene effects (l) and dominance × dominance (l) type of epistasis were found important for the character like T. S. S. whereas addi- A tive component (d) was the major contributor for rind thickness. Duplicate type of epistasis was found more prominent for both the characters.
