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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2021
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oai:doaj.org-article:6d6a762307af4698b1e19c0363fc29b52021-11-25T16:00:45ZDurum Wheat Mediterranean Landraces: A Valuable Source for Resistance to Tan Spot Disease10.3390/agriculture111111482077-0472https://doaj.org/article/6d6a762307af4698b1e19c0363fc29b52021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0472/11/11/1148https://doaj.org/toc/2077-0472Tan 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.Marwa LaribiSarrah Ben M’BarekMoez FakhfakhAmor Hassine YahyaouiKhaled SassiMDPI AGarticletan spotdurum wheatlandracediversityplant heightdays to headingAgriculture (General)S1-972ENAgriculture, Vol 11, Iss 1148, p 1148 (2021) |
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| language |
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tan spot durum wheat landrace diversity plant height days to heading Agriculture (General) S1-972 |
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tan spot durum wheat landrace diversity plant height days to heading Agriculture (General) S1-972 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 |
| 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. |
| format |
article |
| 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 |
| title |
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_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_sort |
durum wheat mediterranean landraces: a valuable source for resistance to tan spot disease |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/6d6a762307af4698b1e19c0363fc29b5 |
| work_keys_str_mv |
AT marwalaribi durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT sarrahbenmbarek durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT moezfakhfakh durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT amorhassineyahyaoui durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT khaledsassi durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease |
| _version_ |
1718413321218031616 |