| pathogenicity for onion and genetic diversity of isolates of the pathogenic fungus colletotrichum gloeosporioides (phyllachoraceae) from the state of pernambuco, brazil. | onion anthracnose, caused by colletotrichum gloeosporioides, is one of the main diseases of onions in the state of pernambuco. we examined the pathogenicity of 15 c. gloeosporioides strains and analyzed their genetic variability using rapds and internal transcribed spacers (its) of the rdna region. ten of the strains were obtained from substrates and hosts other than onion, including chayote (sechium edule), guava (psidium guajava), pomegranate (punica granatum), water from the capibaribe river, ... | 2011 | 21365546 |