HortScience (2005) 40, 21-23

Richard L. Bell and Tom van der Zwet (2005)
Host resistance in Pyrus to Fabraea leaf spot
HortScience 40 (1), 21-23
Abstract: Pear leaf spot, caused by the fungus Fabraea maculata Atk. (anamorph: Entomosporium mespili (DC.) Sacc.) occurs in most areas of the world where pears are grown. Most major cultivars of the european pear, P. communis L., for which data are available are susceptible. Ratings appearing in the literature are sometimes contradictory. This study evaluated resistance/susceptibility within a diverse collection of Pyrus cultivars and other germplasm in a randomized and replicated nursery plot using quantitative measures of disease incidence and severity. The least susceptible genotypes were the P. communis cultivars 'Beurre Fouqueray' and 'Bartlett', the P. pyrifolia cultivars 'Imamura Aki', and the P. communis x P. ussuriensis hybrid NJ 477643275.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Diplocarpon mespili	Pear (Pyrus)