Species of fungi in the order Erysiphales cause disease referred to as powdery mildew which affect more than 10,000 angiosperm species (Glawe, 2008). These are obligate pathogens with a global distribution especially temperate regions northern hemisphere (Braun & Cook, 2012). Iran possesses one richest apiaceous floras world (Valiejo-Roman et al., 2006) and some these susceptible mildew, includ...
