Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia
Development of low-nitrogen (N) tolerant and N-responsive durum wheat genotypes is required since nitrogen efficiency has emerged as a highly desirable trait from economic and environmental perspectives. Two hundred durum wheat genotypes were evaluated at three locations under optimum (ON) and low (...
| Autores principales: | , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Hindawi Limited
2022
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/127676 |
| _version_ | 1855532018117378048 |
|---|---|
| author | Aga, Tesfaye Geleta Abera, Fetien Abay Tufa, Tesfaye Balemi Abebe, Kebebew Assefa Abeyo, Bekele G. Ayana, Negash Geleta |
| author_browse | Abebe, Kebebew Assefa Abera, Fetien Abay Abeyo, Bekele G. Aga, Tesfaye Geleta Ayana, Negash Geleta Tufa, Tesfaye Balemi |
| author_facet | Aga, Tesfaye Geleta Abera, Fetien Abay Tufa, Tesfaye Balemi Abebe, Kebebew Assefa Abeyo, Bekele G. Ayana, Negash Geleta |
| author_sort | Aga, Tesfaye Geleta |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Development of low-nitrogen (N) tolerant and N-responsive durum wheat genotypes is required since nitrogen efficiency has emerged as a highly desirable trait from economic and environmental perspectives. Two hundred durum wheat genotypes were evaluated at three locations under optimum (ON) and low (LN) nitrogen conditions to screen genotypes for low-nitrogen tolerance and responsiveness to an optimum N supply. The results showed significant variations among the durum wheat genotypes for low-N tolerance and responsiveness. The average reduction in grain yield under the LN condition was 48.03% across genotypes. Only 17% of the genotypes tested performed well (grain yield reduction <40%) under LN conditions. Based on the absolute grain yield, biomass yield, and normalized difference vegetative index value, on average, 32, 14, 17, and 37% of the tested genotypes were classified as efficient and responsive, efficient and nonresponsive, inefficient and responsive, and inefficient and nonresponsive, respectively. Considering the absolute and relative grain yield, biomass yield, normalized difference vegetative index values, and stress tolerance indices as selection criteria, 17 genotypes were chosen for subsequent breeding. Among the screening indices, geometric mean productivity, stress tolerance index, yield index, and stress susceptibility index exhibited positive and significant correlations with grain yield under both N conditions; hence, either of these traits can be used to select low-N-tolerant genotypes. The common genotypes identified as LN-tolerant and responsive to N application in this study could be used as parental donors for developing N-efficient and responsive durum wheat varieties. |
| format | Journal Article |
| id | CGSpace127676 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Hindawi Limited |
| publisherStr | Hindawi Limited |
| record_format | dspace |
| spelling | CGSpace1276762025-11-06T13:07:26Z Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia Aga, Tesfaye Geleta Abera, Fetien Abay Tufa, Tesfaye Balemi Abebe, Kebebew Assefa Abeyo, Bekele G. Ayana, Negash Geleta nitrogen hard wheat genotypes Development of low-nitrogen (N) tolerant and N-responsive durum wheat genotypes is required since nitrogen efficiency has emerged as a highly desirable trait from economic and environmental perspectives. Two hundred durum wheat genotypes were evaluated at three locations under optimum (ON) and low (LN) nitrogen conditions to screen genotypes for low-nitrogen tolerance and responsiveness to an optimum N supply. The results showed significant variations among the durum wheat genotypes for low-N tolerance and responsiveness. The average reduction in grain yield under the LN condition was 48.03% across genotypes. Only 17% of the genotypes tested performed well (grain yield reduction <40%) under LN conditions. Based on the absolute grain yield, biomass yield, and normalized difference vegetative index value, on average, 32, 14, 17, and 37% of the tested genotypes were classified as efficient and responsive, efficient and nonresponsive, inefficient and responsive, and inefficient and nonresponsive, respectively. Considering the absolute and relative grain yield, biomass yield, normalized difference vegetative index values, and stress tolerance indices as selection criteria, 17 genotypes were chosen for subsequent breeding. Among the screening indices, geometric mean productivity, stress tolerance index, yield index, and stress susceptibility index exhibited positive and significant correlations with grain yield under both N conditions; hence, either of these traits can be used to select low-N-tolerant genotypes. The common genotypes identified as LN-tolerant and responsive to N application in this study could be used as parental donors for developing N-efficient and responsive durum wheat varieties. 2022-12-09 2023-01-20T10:09:38Z 2023-01-20T10:09:38Z Journal Article https://hdl.handle.net/10568/127676 en Open Access application/pdf Hindawi Limited Aga, T. G., Abera, F. A., Tufa, T. B., Abebe, K. A., Abeyo, B. G., & Ayana, N. G. (2022). Nitrogen Deficiency Tolerance and Responsiveness of Durum Wheat Genotypes in Ethiopia. International Journal of Agronomy, 2022, 1–15. https://doi.org/10.1155/2022/9506078 |
| spellingShingle | nitrogen hard wheat genotypes Aga, Tesfaye Geleta Abera, Fetien Abay Tufa, Tesfaye Balemi Abebe, Kebebew Assefa Abeyo, Bekele G. Ayana, Negash Geleta Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title | Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title_full | Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title_fullStr | Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title_full_unstemmed | Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title_short | Nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in Ethiopia |
| title_sort | nitrogen deficiency tolerance and responsiveness of durum wheat genotypes in ethiopia |
| topic | nitrogen hard wheat genotypes |
| url | https://hdl.handle.net/10568/127676 |
| work_keys_str_mv | AT agatesfayegeleta nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia AT aberafetienabay nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia AT tufatesfayebalemi nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia AT abebekebebewassefa nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia AT abeyobekeleg nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia AT ayananegashgeleta nitrogendeficiencytoleranceandresponsivenessofdurumwheatgenotypesinethiopia |