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231225s1997 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS.1997.81.6.592
|2 doi
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|a DE-627
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|a eng
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|a Zuniga, T L
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|4 aut
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|a Characterization of Pathogenic Races of Fusarium oxysporum f. sp. melonis Causing Fusarium Wilt of Melon in New York
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|c 1997
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 20.11.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Forty-six isolates of Fusarium oxysporum f. sp. melonis obtained from soil samples throughout melon-producing areas in New York State were identified on the basis of pathogenicity and colony morphology. Physiological races 1 and 2 were identified by their reaction on a set of differential melon cultivars. Race 1 was widely distributed, occurring in six of the seven New York counties surveyed. Twenty-seven of the 28 race 1 isolates were associated with vegetative compatibility group (VCG) 0134, whereas one was incompatible with all known VCGs of F. oxysporum f. sp. melonis. Twelve out of 18 race 2 isolates were associated with VCG 0131, and occurred in four counties in eastern and western New York. Five isolates of race 2, associated with VCG 0130, were recovered from a farm in Washington County, as was a single race 2 isolate which was incompatible with all known VCGs of F. oxysporum f. sp. melonis. Restriction fragment length polymorphisms in the nuclear DNA revealed variability among the isolates examined, but race 1/VCG 0134 isolates from New York and Maryland were identical or nearly so, as were race 2/VCG 0131 isolates from the two states. These findings suggest a close relationship between the populations of F. oxysporum f. sp. melonis in New York and Maryland. Race 2 isolates were more virulent than race 1 isolates, based on the number of days to first symptoms and death of melon seedlings
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|a Journal Article
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|a cantaloupe
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|a muskmelon
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|a Zitter, T A
|e verfasserin
|4 aut
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|a Gordon, T R
|e verfasserin
|4 aut
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|a Schroeder, D T
|e verfasserin
|4 aut
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|a Okamoto, D
|e verfasserin
|4 aut
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|i Enthalten in
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|g 81(1997), 6 vom: 30. Juni, Seite 592-596
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|x 0191-2917
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|g volume:81
|g year:1997
|g number:6
|g day:30
|g month:06
|g pages:592-596
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|u http://dx.doi.org/10.1094/PDIS.1997.81.6.592
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