Characterization of Mediterranean durum wheat for resistance to Pyrenophora tritici-repentis
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Title |
Characterization of Mediterranean durum wheat for resistance to Pyrenophora tritici-repentis
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Creator |
Laribi, Marwa
Yahyaoui, Amor Hassine Abdedayem, Wided Kouki, Hajer Sassi, Khaled Ben M’Barek, Sarrah |
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Subject |
spots
hard wheat landraces phenotypic variation plant height disease resistance genetics |
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Description |
Tan 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.
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Date |
2022-02-11
2023-04-07T12:22:30Z 2023-04-07T12:22:30Z |
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Type |
Journal Article
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Identifier |
Laribi, M., Yahyaoui, A. H., Abdedayem, W., Kouki, H., Sassi, K., & Ben M’Barek, S. (2022). Characterization of mediterranean durum wheat for resistance to Pyrenophora tritici-repentis. Genes, 13(2), 336. https://hdl.handle.net/10883/22004
2073-4425 https://hdl.handle.net/10568/129936 https://hdl.handle.net/10883/22004 https://doi.org/10.3390/genes13020336 |
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Language |
en
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Rights |
CC-BY-4.0
Open Access |
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Format |
application/pdf
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Publisher |
MDPI AG
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Source |
Genes
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