Pratylenchus zeae in yam, Dioscorea cayenensis and D. alata, in Brazil

摘要

The genus Pratylenchus is the most economically important nematode for yam. Samples of tubers and soil of Dioscorea cayenensis and D. alata were collected in states of Brazil. Through morphometric characterization and molecular analysis of the ITS and 28S rDNA regions, the nematode Pratylenchus zeae was identified. This is the first report of P. zeae in yam in Brazil.