Downy Mildew Research Laboratory, University of Mysore, Mysore-6, India
*Nuclear Research Laboratory, I.A.R.I., New Delhi-12.
The present investigation was undertaken to study the genetic architecture of resistance to downy mildew of pearl millet under artificial epiphytotic conditions. Gene effects estimated for 50 crosses revealed that additive, dominance and epistatic effects are important in the inheritance of resistance. It was found that dominance effects are higher than additive and epistatic effects are more than dominance effects. Of the epistatic effects dominance x dominance are mostly negative reinforcing the resistance. Heterosis is due to the interaction of additive × additive and dominance × dominance effects.
