Characterization of Mediterranean durum wheat for resistance to Pyrenophora tritici-repentis

dc.creatorLaribi, M.
dc.creatorYahyaoui, A.H.
dc.creatorAbdedayem, W.
dc.creatorKouki, H.
dc.creatorSassi, K.
dc.creatorBen M’Barek, S.
dc.date2022-03-01T01:20:15Z
dc.date2022-03-01T01:20:15Z
dc.date2022
dc.date.accessioned2023-07-17T20:08:58Z
dc.date.available2023-07-17T20:08:58Z
dc.identifierhttps://hdl.handle.net/10883/22004
dc.identifier10.3390/genes13020336
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7513770
dc.descriptionTan spot (TS), caused by the fugus Pyrenophora tritici-repentis (Ptr), has gained significant importance in the last few years, thereby representing a threat to wheat production in all major wheat-growing regions, including Tunisia. In this context, we evaluated a Mediterranean collection of 549 durum wheat accessions under field conditions for resistance to Ptr over two cropping seasons in Jendouba (Tunisia), a hot spot for Ptr. The relative disease severities showed significant phenotypic variation from resistance to susceptibility. The correlation between disease scores over the two trials was significant, as 50% of the accessions maintained good levels of resistance (resistant–moderately resistant). Seedling-and adult-stage reactions were significantly correlated. The ANOVA analysis revealed that the genotype term is highly significant at the adult stage, thus emphasizing the high genetic variability of the tested accessions. Reaction-type comparison among and between countries revealed a high diversity of TS resistance. Plant height (PH) was negatively correlated to disease scores, indicating that PH might either have a significant effect on TS severity or that it can be potential disease escape traits. The evaluation of this collection allowed for the identification of potential diverse resistance sources to Ptr that can be incorporated in breeding programs.
dc.languageEnglish
dc.publisherMDPI
dc.relationhttps://www.mdpi.com/2073-4425/13/2/336#supplementary
dc.relationNutrition, health & food security
dc.relationPlant Health
dc.relationGenetic Innovation
dc.relationhttps://hdl.handle.net/10568/129936
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.source2
dc.source13
dc.source2073-4425
dc.sourceGenes
dc.source336
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectTan Spot
dc.subjectDurum Wheat
dc.subjectPhenotypic Diversity
dc.subjectSPOTS
dc.subjectHARD WHEAT
dc.subjectLANDRACES
dc.subjectPHENOTYPIC VARIATION
dc.subjectPLANT HEIGHT
dc.subjectDISEASE RESISTANCE
dc.titleCharacterization of Mediterranean durum wheat for resistance to Pyrenophora tritici-repentis
dc.typeArticle
dc.typePublished Version
dc.coverageMediterranean region
dc.coverageTunisia
dc.coverageBasel (Switzerland)


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