Effect of season and aggressiveness of isolates on the response of two apple rootstocks to Phytophthora cactorum infection

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dc.contributor.authorZondo P.T.
dc.contributor.authorDenman S.
dc.contributor.authorLabuschagne I.F.
dc.date.accessioned2011-05-15T15:58:51Z
dc.date.available2011-05-15T15:58:51Z
dc.date.issued2007
dc.description.abstractTwo inoculation techniques were applied to investigate the effects of season and isolate variability on apple rootstocks in response to Phytophthora cactorum infection. Shoots of rootstocks MM106 and MM109 were inoculated in vitro with a single P. cactorum isolate once a month for 26 months. Rootstock susceptibility measured as lesion lengths generally cycled to a low level during dormancy in winter and to a high level during active growth in summer. Direct inoculation on excised stems was used to assess the relative aggressiveness of P. cactorum isolates. Bark was removed and stems were inoculated with mycelial discs of various P. cactorum isolates. Rootstock × isolate interactions complicated this evaluation, causing variable results. However, differences in relative aggressiveness of isolates were apparent during the dormant stage of apple stems. It was shown that the season during which evaluation was performed and variation of isolate aggressiveness affected the host reaction to P. cactorum infection. © Australasian Plant Pathology Society 2007.
dc.description.versionArticle
dc.identifier.citationAustralasian Plant Pathology
dc.identifier.citation36
dc.identifier.citation3
dc.identifier.issn8153191
dc.identifier.other10.1071/AP07022
dc.identifier.urihttp://hdl.handle.net/10019.1/10876
dc.subjectMalus x domestica
dc.subjectPhytophthora cactorum
dc.titleEffect of season and aggressiveness of isolates on the response of two apple rootstocks to Phytophthora cactorum infection
dc.typeArticle
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