Table 2 Summary of model parameters, and their default or range of values that were used to generate simulations
Model parametera | Default or range of values |
|---|---|
Simulation grid size | 240 x 240 |
Mixture structure | Two cultivars; alternative blocks of 20 x 20 of a single cultivar |
Genotype unit area | 400 plants [20 x 20] |
Number of susceptible units per plant | 30 |
Number of virulence factors against each host | 3 |
Initial number of pathogen virulence genotypes | 6 [each with one virulence factor] |
Median spore dispersal distance [half-Cauchy function] | 1 plant distance unit |
Pathogen latent period | 5 days |
Pathogen infectious period | 7 days |
Duration of a simulated epidemics within a season | 42 days |
Cost of virulence for an additional virulence factor against the non-host cultivar (VC) | 0.0, 0.05, 0.1 |
Sporulation rate (λ) | When VC = 0, λo = 0.45, 0.50, 0.55 |
When VC> 0, λ = λo(1 – nVC) | |
Number of initial diseased unit per fungal genotype (YI) | 16, 32 |
Proportion of sexual primary inocula (PC) | 0.1, 0.3, 0.5, 0.7, 1.0 |
Probability of between-cultivar mating (PB) [within-cultivar mating probability is 1.0] | 0.1, 0.3, 0.5, 0.7, 1.0 |
Recombination among virulence factors (r) | 0.05, 0.1, 0.2, 0.5 |