COMPARAÇÕES SAZONAIS DO EFEITO DA XYLELLA FASTIDIOSA EM CULTIVARES DE CAFEEIRO (1)

SEASONAL COMPARACTIONS OF XYLELLA FASTIDIOSA EFFECT IN COFFEE CULTIVARS Historically, coffee plants showing atrophy and scorch branch were attributed to nutritional disorders due to successive high yields. The bacteria XylelLa fastidiosa Wells et al. is currently the most reported pathogen related with the problem and the symptoms are associated with stress. Although the bacteria has been well studied in the United States particularly in grape, few is known about the pathogenhost-vector relationship. The present studies were carried out with coffee plants (grafted or not grafted) aiming to evaluate xylem vessels obstruction in various plant parts, including branches with and without