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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-04-21-0874-RE
|2 doi
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|a pubmed24n1253.xml
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|a DE-627
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|a eng
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| 100 |
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|a Sivachandra Kumar, Nimllash T
|e verfasserin
|4 aut
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| 245 |
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|a Characterization of Aphanomyces euteiches Pathotypes Infecting Peas in Western Canada
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|c 2021
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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 Completed 25.01.2022
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Aphanomyces root rot, caused by the soilborne oomycete Aphanomyces euteiches Drechs., has developed into a serious disease in the pea- and lentil-producing areas of the Great Plains of North America. Based on six pea differentials previously used to differentiate 11 pathotypes in France, pathotypes were identified among field isolates from Saskatchewan (14) and Alberta (18). Four isolates from the U.S.A. and standard isolates for pathotypes I and III designated in the French study were also included. Each isolate was tested twice in replicated experiments by inoculating French pea differentials 'Baccara', 'Capella', MN 313, 902131, 552, and PI 80693, along with the Canadian susceptible pea cultivar 'CDC Meadow' and partially resistant USDA line PI 660736 under controlled conditions. Pea plants grown in vermiculite were inoculated 10 days after seeding by pipetting 5 ml of a suspension containing 1 × 103 zoospores ml-1 to the base of each plant. Root discoloration was scored 10 days postinoculation using a 0 to 5 scale. Testing revealed that 38 of the isolates, including standard pathotype I isolate RB84, belonged to pathotype I; four isolates including standard pathotype III isolate Ae109 were pathotype III; and U.S.A. isolate Ae16-01 was a pathotype II isolate. An alfalfa isolate from Quebec was avirulent on all pea genotypes. These findings indicate that pathotype I is predominant on the Canadian prairies
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|a Journal Article
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|a breeding
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|a oomycetes
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| 650 |
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4 |
|a pea differentials
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| 650 |
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4 |
|a virulence
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| 700 |
1 |
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|a Caudillo-Ruiz, Kiela B
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chatterton, Syama
|e verfasserin
|4 aut
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| 700 |
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|a Banniza, Sabine
|e verfasserin
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|i Enthalten in
|t Plant disease
|d 1997
|g 105(2021), 12 vom: 02. Dez., Seite 4025-4030
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|x 0191-2917
|7 nnns
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|g volume:105
|g year:2021
|g number:12
|g day:02
|g month:12
|g pages:4025-4030
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| 856 |
4 |
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|u http://dx.doi.org/10.1094/PDIS-04-21-0874-RE
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