Crosses and backcrosses of CpR5M or CpR5S with CpS.

Mortality rates of CM larvae determined in resistance tests with neonate larvae seven days post infection (p.i.), exposed to CpGV-M or CpGV-S at a discriminating concentration of 5.8 X 104 OB/ml are shown. The mortality was determined for the offspring of the different strains, CpS, CpR5M, and CpR5S, of the hybrid crosses between CpR5M or CpR5S with CpS, and of the backcrosses. Progeny genotypes are shown for two hypotheses: a single Z-linked, dominant resistance gene (Z) or a single autosomal, dominant resistance gene (A). Abbreviations are BC (backcross), R (resistant allele), S (susceptible allele), F1 (offspring of the first generation), f (female), m (male), M (mean), SD (standard deviation), N (number of replicates), and n (total number of tested larvae). Given are the expected (Exp) mortality rates for dominant Z-linked (Z) or autosomal (A) inheritance hypotheses of the F1 generation and of the backcrosses. Differences in the expected mortality predicted by Z-linked vs. autosomal inheritance hypotheses are highlighted in gray.