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|a 10.2478/jofnem-2023-0032
|2 doi
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|a pubmed24n1201.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Pollok, Jill R
|e verfasserin
|4 aut
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| 245 |
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|a Effect of Soil Temperature on Reproduction of Root-knot Nematodes in Flue-cured Tobacco with Homozygous Rk1 and/or Rk2 Resistance Genes
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 15.09.2023
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Jill R. Pollok et al., published by Sciendo.
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|a Most commercial flue-cured tobacco cultivars contain the Rk1 resistance gene, which provides resistance to races 1 and 3 of Meloidogyne incognita and race 1 of M. arenaria. A number of cultivars now possess a second root-knot resistance gene, Rk2. High soil temperatures have been associated with a breakdown of root-knot resistance genes in a number of crops. Three greenhouse trials were performed from 2014 to 2015 investigate the effect of high soil temperature on the efficacy of Rk1 and/or Rk2 genes in reducing parasitism by a population of M. incognita race 3. Trials were arranged in randomized complete block design in open-top growth chambers set at 25°, 30°, and 35°C. Plants were inoculated with 3,000 eggs and data were collected 35 days post-inoculation. Galling, numbers of egg masses and eggs, and reproductive index were compared across cultivar entries. Nematode reproduction was reduced at 25°C and 30°C on entries possessing Rk1 and Rk1Rk2 compared to the susceptible entry and the entry possessing only Rk2. However, there were often no significant differences in reproduction at 35°C between entries with Rk1 and/or Rk2 compared to the susceptible control, indicating an increase of root-knot nematode parasitism on resistant entries at higher temperatures. Although seasonal differences in nematode reproduction were observed among experiments, relative differences among tobacco genotypes remained generally consistent
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|a Journal Article
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|a Meloidogyne arenaria
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| 650 |
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4 |
|a Meloidogyne incognita race 3
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| 650 |
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4 |
|a Nicotiana tabacum
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| 650 |
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4 |
|a plant disease loss
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| 650 |
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4 |
|a reproductive index
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| 700 |
1 |
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|a Johnson, Charles S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Eisenback, J D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a David Reed, T
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Adamo, Noah
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of nematology
|d 1969
|g 55(2023), 1 vom: 15. Feb., Seite 20230032
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|x 0022-300X
|7 nnns
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| 773 |
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|g volume:55
|g year:2023
|g number:1
|g day:15
|g month:02
|g pages:20230032
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|u http://dx.doi.org/10.2478/jofnem-2023-0032
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