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- Title
The influence of cultivar and isolate on the development of gangrene ( Phoma exigua var. foveata) in potato tubers.
- Authors
BAIN, R. A.; LENNARD, J. H.; WASTIE, R. L.
- Abstract
SUMMARY In studies on the infection of potato cultivars with different field isolates of Phoma exigua var. foveata, cultivar × isolate interactions, although sufficiently large to influence the relative pathogenicities of isolates on different cultivars, were not substantial enough to affect cultivar ranking order. Cultivar rank was markedly influenced by pathogen isolate only when both field and culture collection isolates were compared. This suggests that the complications of cultivar × isolate interactions can be avoided in cultivar screening tests by the use of recent field isolates of high pathogenicity. It was found that cultivar was considerably more important than isolate in determining gangrene lesion size. The need to consider both lesion diameter and depth when estimating rot size following point inoculation of different cultivars was confirmed.
- Publication
Annals of Applied Biology, 1987, Vol 111, Issue 3, p535
- ISSN
0003-4746
- Publication type
Article
- DOI
10.1111/j.1744-7348.1987.tb02011.x