highly significantP = 0.0002
This correlation is highly significant for the 24 non-agricultural strains ( r 2 = 0.47, P = 0.0002) while it was not significant for the 31 agricultural strains ( r 2 = 0.03, P = 0.33), suggesting that the relationship between aggressiveness and sclerotial production differ among these two populations of strains.