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- Wallenhammar, Ann-CharlotteHS Konsult AB, Sweden (författare)
Influence of soil-borne inoculum of plasmodiophora brassicae measured by qpcr on disease severity of clubroot-resistant cultivars of winter oilseed rape (Brassica napus l.)
- Artikel/kapitelEngelska2021
Förlag, utgivningsår, omfång ...
- 2021-04-06
- MDPI AG,2021
- printrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:ri-53020
- https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-53020URI
- https://doi.org/10.3390/pathogens10040433DOI
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- Språk:engelska
- Sammanfattning på:engelska
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- Funding details: Agricultural Research Foundation, ARF; Funding details: Stiftelsen Lantbruksforskning, SLF, O-16-20-765; Funding text 1: This research was funded by the Swedish Farmers? Foundation for Agricultural Research (grant number O-16-20-765), the Foundation for Swedish Oil Plant research and Carl Robert Prytz Donation fund.; Funding text 2: Funding: This research was funded by the Swedish Farmers’ Foundation for Agricultural Research (grant number O-16-20-765), the Foundation for Swedish Oil Plant research and Carl Robert Prytz Donation fund.
- Use of resistant cultivars is considered the most effective tool in managing clubroot. Three clubroot-resistant commercial winter oilseed rape (OSR) cultivars and a susceptible ‘Cultivar mix’ were evaluated for disease severity index (DSI) and yield performance in field soils, selected for varying abundance of natural inoculum of Plasmodiophora brassicae. Seven field trials were carried out during 2017–2019 in winter OSR crops, and comparative bioassays were performed in a growth chamber. Substantial variation in clubroot infection between years was observed in the field trials. For Cultivar mix, a negative correlation (y = −252.3ln(x) + 58,897.6) was found between inoculum density and seed yield in five trials, whereas no correlation was found for the resistant cultivars. In bioassays, Cultivar mix exhibited a significantly high correlation between DSIb and number of gene copies g−1 soil (R2 = 0.72). For resistant cvs., Mentor and Alister, correlation was R2 = 0.45 and 0.58, respectively, indicating that resistance was under pressure. In field trials, DSIf of the resistant cultivars was lower (<27). The recommendation is thus to use clubroot-resistant cultivars of OSR as part of Integrated Pest Management in situations where abundance of P. brassicae DNA exceeds 1300 gene copies g−1 soil. © 2021 by the authors.
Ämnesord och genrebeteckningar
- LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Jordbruksvetenskap hsv//swe
- AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Agricultural Science hsv//eng
- Bioassays
- Brassica napus
- Clubroot
- Disease severity index (DSI)
- Field trials
- Real-time qPCR
- Resistant cultivars
- Soil-borne inoculum
- Yield
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Omer, ZahraHS Konsult AB, Sweden (författare)
- Edin, EvaHS Konsult AB, Sweden (författare)
- Jonsson, AndersRISE,Jordbruk och livsmedel (författare)
- HS Konsult AB, SwedenJordbruk och livsmedel (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Pathogens: MDPI AG10:42076-0817
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