Durum wheat mediterranean landraces: a valuable source for resistance to tan spot disease

dc.creatorLaribi, M.
dc.creatorBen M’Barek, S.
dc.creatorFakhfakh, M.
dc.creatorYahyaoui, A.H.
dc.creatorSassi, K.
dc.date2021-11-30T01:20:19Z
dc.date2021-11-30T01:20:19Z
dc.date2021
dc.date.accessioned2023-07-17T20:08:20Z
dc.date.available2023-07-17T20:08:20Z
dc.identifierhttps://hdl.handle.net/10883/21746
dc.identifier10.3390/agriculture11111148
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7513515
dc.descriptionTan spot (TS), caused by Pyrenophora tritici-repentis (Ptr), has gained significant importance in Tunisia. In this study, a Mediterranean durum wheat collection of 113 accessions were evaluated under field conditions, during the 2018–2019 cropping season, for resistance to Ptr at Koudia experimental station in Bou Salem (Tunisia). The disease progress curve (AUDPC) was used to screen this collection, and the effect of days to heading (DH) and plant height (PH) were evaluated in relation to TS resistance. No significant correlation of PH with AUDPC was found, yet a significant correlation (r = 0.212, p ≤ 0.05) was established between DH and AUDPC scores, suggesting that DH may have an effect on TS development. Moreover, correlation between seedling and adult reactions was significant (r = 0.695, p ≤ 0.001). Although susceptible accessions clustered separately from resistant accessions, the clustering was independent of the country of origin and the status of improvement of the wheat accessions. In total, 67% and 80% of resistant and moderately resistant accessions, respectively, were landraces, suggesting therefore the possible presence of novel sources of resistance to Ptr in some landraces, which can be used to establish a breeding program for resistance to tan spot disease.
dc.languageEnglish
dc.publisherMDPI
dc.relationhttps://www.mdpi.com/2077-0472/11/11/1148#supplementary
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose
dc.rightsOpen Access
dc.source11
dc.source11
dc.source2077-0472
dc.sourceAgriculture (Switzerland)
dc.source1148
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectTan Spot
dc.subjectDurum Wheat
dc.subjectDays to Heading
dc.subjectSPOTS
dc.subjectHARD WHEAT
dc.subjectLANDRACES
dc.subjectDIVERSITY
dc.subjectPLANT HEIGHT
dc.subjectHEADING
dc.subjectDISEASE RESISTANCE
dc.titleDurum wheat mediterranean landraces: a valuable source for resistance to tan spot disease
dc.typeArticle
dc.typePublished Version
dc.coverageBasel (Switzerland)


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