Figure 4
From: Allopolyploidy and the evolution of plant virus resistance
Pictographic description of the modified matching allele model applied to the additive resistance hypothesis. Resistant and susceptible parents (e.g. diploid progenitors of an allopolyploid) carry unique complements of resistance factors (blue) and susceptibility factors (red). The allopolyploid plant would maintain a mix of resistance and susceptibility factors from each parent (fixed heterozygosity), and also would be expected to exhibit unique (nonadditive) expression profiles of resistance and susceptibility factors.