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Downy mildew evaluation in wild rocket genotypes (<i>Diplotaxis tenuifolia</i> (L.) DC) under field and controlled conditions

2023-10Conference object Restricted access
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dc.contributor.authorCoelho, P. S.
dc.contributor.authorPereira, A. L.
dc.contributor.authorReis, João
dc.contributor.authorCarranca, C.
dc.contributor.authorLopes, V. R.
dc.contributor.authorLeitão, José
dc.date.accessioned2024-08-30T13:11:04Z
dc.date.available2024-08-30T13:11:04Z
dc.date.issued2023-10
dc.description.abstractWild rocket downy mildew (DM) is a foliar disease caused by the oomycete Hyaloperonospora spp. that limits the production of brassicas, especially in temperate climates, infecting plants at all growth stages. During 2021 autumn season, a field trial (polytunnel) with a set of 40 wild rocket accessions from different origins (harvest missions, gene banks, commercial cultivars) was installed in a commercial enterprise located in Odemira, southern Portugal. The plants were naturally infected by Hyaloperonospora spp. and were visually evaluated 71 days after sowing. Field observations of adult plants evidenced differences among accessions concerning the DM resistance and agronomic traits (e.g., flowering date, vigour, plant habit, leaf serration). Sixteen wild rocket accessions were identified with an interesting resistance response to DM in adult phase. In a previous study, the wild rocket accessions were tested to Hyaloperonospora isolate D5 at seedling stage under controlled conditions. A significant coefficient of correlation was observed (r=0.628, P=0.000, n=36) by comparing the plants in both growth phases. In general, the accessions were more resistant at adult than at seedling stage. No accessions were resistant at seedling and susceptible at adult stage. However, two accessions with a highly susceptible response at seedling stage presented a resistant and a partially resistant response at adult phase under field conditions. Our results suggest that DM resistance observed at the seedling stage is a good indication of wild rocket resistance behaviour at field adult plant. The most promising accessions identified as resistant at seedling stage may be further exploited in breeding programmes.eng
dc.description.sponsorshipPTDC/ASP-PLA/28963/2017
dc.identifier.doi10.17660/actahortic.2023.1378.56
dc.identifier.eissn2406-6168
dc.identifier.issn0567-7572
dc.identifier.urihttp://hdl.handle.net/10400.1/25812
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInternational Society for Horticultural Science (ISHS)
dc.relationGREEN-IT "Bioresources for Sustainability"
dc.relationGREEN-IT "Bioresources for Sustainability"
dc.relation.ispartofActa Horticulturae
dc.rights.uriN/A
dc.subjectField resistance
dc.subjectGermplasm collection
dc.subjectOomycete pathogen
dc.subjectSeedling and adult plant resistance
dc.titleDowny mildew evaluation in wild rocket genotypes (<i>Diplotaxis tenuifolia</i> (L.) DC) under field and controlled conditionseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleGREEN-IT "Bioresources for Sustainability"
oaire.awardTitleGREEN-IT "Bioresources for Sustainability"
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04551%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04551%2F2020/PT
oaire.citation.endPage425
oaire.citation.issue1378
oaire.citation.startPage417
oaire.citation.title31st International Horticultural Congress (IHC) - Horticulture for a World in Transition / International Symposium on Sustainable Control of Pests and Diseases
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameReis
person.familyNameLeitão
person.givenNameJoão
person.givenNameJosé
person.identifier258398
person.identifier.ciencia-idC818-CA64-011F
person.identifier.ciencia-id7A17-3E0A-73AD
person.identifier.orcid0000-0002-3461-8904
person.identifier.orcid0000-0003-4278-0415
person.identifier.ridAAH-3958-2020
person.identifier.scopus-author-id7005119796
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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relation.isAuthorOfPublication.latestForDiscovery0f990d1c-2913-4f8a-8fb6-f8b02721247f
relation.isProjectOfPublication9672d440-b305-453f-982c-95ee58893841
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relation.isProjectOfPublication.latestForDiscovery9672d440-b305-453f-982c-95ee58893841

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