Vegetative Compatibility Groups in<i>Fusarium oxysporum</i>f. sp.<i>lycopersici</i>

Abstract

A worldwide collection of 115 isolates of Fusarium oxysporum f. sp. lycopersici from tomato was examined for pathogenicity, colony morphology, and vegetative compatibility. No correlations were found between colony morphology and length of time in culture, race, vegetative compatibility group (VCG), or geographic origin. Vegetative compatibility group 0030 contained all three races of F. o. lycopersici and all colony morphology types. Vegetative compatibility groups 0031 and 0032 contained races 1 and 2, but their geographic ranges were somewhat more limited. In addition, 50 isolates of F. o. lycopersici were the sole members of a VCG (VCG 003-) (...)