a colleague is interested in assessing yield penalty for groundnut cultivars having multi resistance to diseases such as leaf miner, rosette, leaf spot, and tolerant to drought
As relative loss relative to a top scorer in Harvest Index (Dry matter/ unit area, relative to top scorer) maeasured in optimal condition., that is without stress or pest. Under circumstance there would be a decrease in the loss gap as stress increases, making resistant lines equal or more profitable. This implies a regressive trend and eventually the measure of sensitivity as the slope of HI versus damage intensity. Resistance is the reciprocal of sensitivity.