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Publication
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| Title of Article |
Levels of Sclerotium rolfsii inoculum influence identification of resistant genotypes in Jerusalem artichoke |
| Date of Acceptance |
24 September 2012 |
| Journal |
| Title of Journal |
African Journal of Microbiology Research |
| Standard |
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| Institute of Journal |
Academic Journals |
| ISBN/ISSN |
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| Volume |
6 |
| Issue |
38 |
| Month |
October |
| Year of Publication |
2013 |
| Page |
6755-6760 |
| Abstract |
Improvement of Jerusalem artichoke genotypes with resistance to stem rot caused by the soil borne
fungus Sclerotium rolfsii is a sustainable means for controlling the disease. However, this crop is rather
new to breeders. A consensus screening procedure for resistance to the disease is not yet available.
The aim of this study was to determine the level of inoculum that provides the reliable and effective
results for screening trials. In the experiment in Khon Kaen, Thailand, four levels of sorghum seed
infested with S. rolfsii (1, 2, 3 or 4 seeds/plant) were tested with 10 Jerusalem artichoke genotypes.
Plants inoculated with one sorghum seed had the lowest disease incidence, whereas plants inoculated
with four sorghum seeds had the highest disease incidence. Most pairings of inoculum levels were
statistically different for disease incidence except for two vs. three seeds. In addition, permanent wilting
and area under disease progress curve occurred more rapidly with four seeds compared to the other
inoculum levels. The highest variation among Jerusalem artichoke genotypes was observed in the
plants inoculated with three sorghum seeds. Therefore, three sorghum seeds inoculum was suitable to
identify Jerusalem artichoke genotypes resistant to S. rolfsii. Based on days to permanent wilting,
resistant and susceptible genotypes were identified. |
| Keyword |
Helianthus tuberosus L., sunchoke, stem rot, disease incidence, genotypes, sorghum seed, area under disease progress curve |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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