Plant Disease (2001) 85, 603-606

B.A. Latorre, M.E. Rioja and W.F. Wilcox (2001)
Phytophthora species associated with crown and root rot of apple in Chile
Plant Disease 85 (6), 603-606
Abstract: Phytophthora cactorum, P. cryptogea, P. gonapodyides, and P. megasperma were isolated from necrotic root and crown tissues or the rhizospheres of apple trees exhibiting typical symptoms of Phytophthora root and crown rot in the Central Valley of Chile. Representative isolates of all four species were pathogenic on a variety of apple rootstocks and scions in trials conducted on excised shoots and 1-year-old MM.106 rootstock grown for 4 months in infested potting medium. P. cactorum was the most frequently isolated species and the most virulent in pot tests, although a significant Phytophthora sp.-apple genotype interaction was observed. This is the first report of any species other than P. cactorum causing root and crown rot of apple trees in Chile.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Bernardo A. Latorre, W.F. Wilcox

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phytophthora cactorum	Apple (Malus)	Chile (continental)
	Phytophthora cryptogea	Apple (Malus)	Chile (continental)
	Phytophthora gonapodyides	Apple (Malus)	Chile (continental)
	Phytophthora rosacearum	Apple (Malus)	Chile (continental)