European Journal of Plant Pathology (1995) 101, 189-199
Sjefke J.H.M. Allefs, Willem van Dooijeweert, Eliza R. de Jong, Wim Prummel and Coosje Hoogendoorn (1995)
The role of the seed tuber in determining partial resistance to potato blackleg caused by Erwinia spp.
European Journal of Plant Pathology 101 (2), 189-199
Abstract: In 1991 and 1992, 12 potato cultivars were screened at two locations for resistance to blackleg, after vacuum infiltration of the seed with Erwinia carotovora subsp. atroseptica or E. chrysanthemi. Cultivar differences for resistance to E. c. subsp. atroseptica and E. chrysanthemi were found which were consistent over locations and years. Seed tubers of the same cultivars were also screened for resistance to both Erwinia spp. by using a tuber slice inoculation method. Correlation coefficients for comparisons between resistance to blackleg in the field and tuber tissue resistance under aerobic or anaerobic conditions were not significant. This could partly be explained by drastic changes in relative tuber tissue resistance of the cultivars within a 5 weeks period after planting in the field. Presprouting of seed tubers in diffuse daylight had a less pronounced effect on relative tuber tissue resistance than planting in the field. Monitoring the process of mother tuber decay during the growing season of 1993 after vacuum infiltration with E. c. subsp. atroseptica and E. chrysanthemi revealed that cultivars differed in the extent to which these bacteria enhanced the process of mother tuber decay. These differences partly explained the cultivar differences for resistance to blackleg in the field.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Pectobacterium atrosepticum | Potato (Solanum tuberosum) | |||
| Dickeya (genus) | Potato (Solanum tuberosum) |
