Tuber response of six potato cultivars to inoculation withPhytophthora erythroseptica, the causal agent of pink rot

Autor:	W. J. Arsenault, Rick D. Peters, A. V. Sturz
Rok vydání:	2004
Předmět:	Inoculation Zoospore Phytophthora erythroseptica fungi Host response food and beverages Plant Science Biology Pathogenicity biology.organism_classification Horticulture Agronomy Cultivar Agronomy and Crop Science
Zdroj:	Canadian Journal of Plant Pathology. 26:63-69
ISSN:	1715-2992 0706-0661
DOI:	10.1080/07060660409507113
Popis:	Pink rot, caused by Phytophthora erythroseptica, is found in most potato-growing regions of the world. No potato cultivars commonly grown in Canada and the U.S.A. are considered immune to pink rot, but differences in the tolerance of certain cultivars to this disease have been reported. A tuber inoculation study was conducted during a 3-year period (2000–2002) with six potato cultivars ('Russet Burbank', 'Shepody', 'Norland', 'Yukon Gold', 'Butte', and 'Goldrush') and four different pathogen isolates (from Prince Edward Island, Canada, and Maine, U.S.A.) to test for variability in host response to infection and the pathogenicity of isolates. Tuber eyes were inoculated with a zoospore suspension of P. erythroseptica, and tubers were subsequently incubated for 2 weeks at 15 °C prior to rating for disease. Although no cultivars were immune to pink rot, significant (P < 0.001) differences in disease incidence and severity were noted among cultivars. 'Norland' and 'Shepody' were significantly (P = 0.05) more s...
Databáze:	OpenAIRE
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