Resistance and tolerance to potato cyst nematodes among Ukrainian potato cultivars and breeding materials
L.A. Pylypenko
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L.A. Pylypenko: Institute of Plant Protection Ukrainian Academy of Agrarian Science, Kiev-22, 03022 Ukraine
Plant Protection Science, 2002, vol. 38, issue SI1-6thConfEFPP, 189-194
Abstract:
Potato is the fourth important cultivated crop in Ukraine; the potato cyst nematode Globodera rostochiensis, Ro1 consistsone of the most serious threats to its industry. A total of 3769 cultivars and hybrids were assessed for resistanceto G. rostochiensis from 1992 to 2002. On the base of the two-stages assay, resistance was identified at 419 and partialresistance at 90 genotypes, which had inherited resistance from 39 resistant cultivars and 23 hybrids. Resistance of the74 genotypes was confirmed in both greenhouse and field plots; their effectiveness in reduction of population densitiesof G. rostochiensis varied from 51 to 96% in one season. The tolerance of 5 Ukrainian potato resistant cultivars wasinvestigated in the field plots and all of them were classified as intolerant.
Keywords: Globodera rostochiensis; potato; resistance; tolerance (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:38:y:2002:i:si1-6thconfefpp:id:10353-pps
DOI: 10.17221/10353-PPS
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