TABLE 7.

Dominance resistance to Cry1Ac in the Melaka population of P. xylostella as a function of the concentration of Cry1Ac for single-pair hybrid F₁ families

Population or families	Characteristics of larvae at Cry1Ac concna of:
	0.2 μg ml−1			1.0 μg ml−1
	Mortality (%)	Fitness	hb	Mortality (%)	Fitness	h
Cry1Ac-SEL	0	1		0	1
ROTH	100	0		100	0
Single-pair F1 families
Cry1Ac-SEL female × ROTH male	35	0.65	0.65	70	0.30	0.30
Cry1Ac-SEL female × ROTH male	43	0.57	0.57	65	0.35	0.35
Cry1Ac-SEL female × ROTH male	40	0.60	0.60	70	0.30	0.30
ROTH female × Cry1Ac-SEL male	73	0.27	0.27	95	0.05	0.05
ROTH female × Cry1Ac-SEL male	93	0.07	0.07	100	0	0

^aFitness is the survival rate of the larvae divided by the survival rate of Cry1Ac-SEL larvae. Estimates of dominance (h) can vary from 0 (completely recessive resistance) to 1 (completely dominant resistance). 

^bSee Table 6, footnote c.