Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease
Tan spot (TS), caused by <i>Pyrenophora tritici-repentis</i> (<i>Ptr</i>), 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 re...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/11/11/1148 |
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| author | Marwa Laribi Sarrah Ben M’Barek Moez Fakhfakh Amor Hassine Yahyaoui Khaled Sassi |
| author_facet | Marwa Laribi Sarrah Ben M’Barek Moez Fakhfakh Amor Hassine Yahyaoui Khaled Sassi |
| author_sort | Marwa Laribi |
| collection | DOAJ |
| description | Tan spot (TS), caused by <i>Pyrenophora tritici-repentis</i> (<i>Ptr</i>), 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 <i>Ptr</i> 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 (<i>r</i> = 0.212, <i>p</i> ≤ 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 (<i>r</i> = 0.695, <i>p</i> ≤ 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 <i>Ptr</i> in some landraces, which can be used to establish a breeding program for resistance to tan spot disease. |
| first_indexed | 2024-03-10T05:48:05Z |
| format | Article |
| id | doaj.art-6d6a762307af4698b1e19c0363fc29b5 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-10T05:48:05Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-6d6a762307af4698b1e19c0363fc29b52023-11-22T21:59:56ZengMDPI AGAgriculture2077-04722021-11-011111114810.3390/agriculture11111148Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot DiseaseMarwa Laribi0Sarrah Ben M’Barek1Moez Fakhfakh2Amor Hassine Yahyaoui3Khaled Sassi4LR14AGR01 Laboratory of Genetic and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, TunisiaCRP Wheat Septoria Precision Phenotyping Platform, Tunis 1082, TunisiaComptoir Multiservices Agricoles, 82, Avenue Louis Brailles, Tunis Belvédère, Tunis 1002, TunisiaCRP Wheat Septoria Precision Phenotyping Platform, Tunis 1082, TunisiaLR14AGR01 Laboratory of Genetic and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, TunisiaTan spot (TS), caused by <i>Pyrenophora tritici-repentis</i> (<i>Ptr</i>), 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 <i>Ptr</i> 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 (<i>r</i> = 0.212, <i>p</i> ≤ 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 (<i>r</i> = 0.695, <i>p</i> ≤ 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 <i>Ptr</i> in some landraces, which can be used to establish a breeding program for resistance to tan spot disease.https://www.mdpi.com/2077-0472/11/11/1148tan spotdurum wheatlandracediversityplant heightdays to heading |
| spellingShingle | Marwa Laribi Sarrah Ben M’Barek Moez Fakhfakh Amor Hassine Yahyaoui Khaled Sassi Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease Agriculture tan spot durum wheat landrace diversity plant height days to heading |
| title | Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease |
| title_full | Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease |
| title_fullStr | Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease |
| title_full_unstemmed | Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease |
| title_short | Durum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease |
| title_sort | durum wheat mediterranean landraces a valuable source for resistance to tan spot disease |
| topic | tan spot durum wheat landrace diversity plant height days to heading |
| url | https://www.mdpi.com/2077-0472/11/11/1148 |
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