Durum wheat mediterranean landraces: a valuable source for resistance to tan spot disease
Tan 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.
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Format: | Article biblioteca |
Language: | English |
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MDPI
2021
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Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Tan Spot, Durum Wheat, Days to Heading, SPOTS, HARD WHEAT, LANDRACES, DIVERSITY, PLANT HEIGHT, HEADING, DISEASE RESISTANCE, |
Online Access: | https://hdl.handle.net/10883/21746 |
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dig-cimmyt-10883-217462023-09-13T15:01:36Z Durum wheat mediterranean landraces: a valuable source for resistance to tan spot disease Laribi, M. Ben M’Barek, S. Fakhfakh, M. Yahyaoui, A.H. Sassi, K. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE Tan 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. 2021-11-30T01:20:19Z 2021-11-30T01:20:19Z 2021 Article Published Version https://hdl.handle.net/10883/21746 10.3390/agriculture11111148 English https://www.mdpi.com/2077-0472/11/11/1148#supplementary CIMMYT 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 Open Access Basel (Switzerland) MDPI 11 11 2077-0472 Agriculture 1148 |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE Laribi, M. Ben M’Barek, S. Fakhfakh, M. Yahyaoui, A.H. Sassi, K. Durum wheat mediterranean landraces: a valuable source for resistance to tan spot disease |
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Tan 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. |
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Article |
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AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Tan Spot Durum Wheat Days to Heading SPOTS HARD WHEAT LANDRACES DIVERSITY PLANT HEIGHT HEADING DISEASE RESISTANCE |
author |
Laribi, M. Ben M’Barek, S. Fakhfakh, M. Yahyaoui, A.H. Sassi, K. |
author_facet |
Laribi, M. Ben M’Barek, S. Fakhfakh, M. Yahyaoui, A.H. Sassi, K. |
author_sort |
Laribi, M. |
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 |
publishDate |
2021 |
url |
https://hdl.handle.net/10883/21746 |
work_keys_str_mv |
AT laribim durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT benmbareks durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT fakhfakhm durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT yahyaouiah durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease AT sassik durumwheatmediterraneanlandracesavaluablesourceforresistancetotanspotdisease |
_version_ |
1777674064228253696 |