Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices
The present study aimed to investigate the extent of variability and relationships between grain yield and morpho-physiological durum wheat traits. Sufficient variability was observed for most characters. Based on stress indices, either widely or specifically, adapted lines were identified. Path ana...
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2021-07-01
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| Series: | Acta Agriculturae Slovenica |
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| Online Access: | https://journals.uni-lj.si/aas/article/view/13021 |
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| author | Radhia MEKAOUSSI Abou-bakr RABTI Zine El Abidine FELLAHI Abderrahmane HANNACHI Amar BENMAHAMMED Hamenna BOUZERZOUR |
| author_facet | Radhia MEKAOUSSI Abou-bakr RABTI Zine El Abidine FELLAHI Abderrahmane HANNACHI Amar BENMAHAMMED Hamenna BOUZERZOUR |
| author_sort | Radhia MEKAOUSSI |
| collection | DOAJ |
| description | The present study aimed to investigate the extent of variability and relationships between grain yield and morpho-physiological durum wheat traits. Sufficient variability was observed for most characters. Based on stress indices, either widely or specifically, adapted lines were identified. Path analysis pointed out to above ground biomass, harvest index, spike fertility and spike number as yield determinants, suggesting that these traits are of interest in the breeding program. The measured traits were classified within 6 principal components accounting for 79.45 % of the total variation. Breeding lines dispersed along first principal component exhibited substantial differences in performance and stress tolerance abilities. Cluster C3 lines were high yielding and stress tolerant. From this cluster, lines L24 and L14 were scored as the best for 7 and 5 traits out of 17 characters, respectively. Both lines are proposed for release and as parents in crosses to take advantage of their desirable characteristics. The results indicated that physiological traits were unrelated to each other and to morphological traits making difficult the concomitant selection for yield and stress tolerance driven by these traits. Complexes crosses, between parents carefully chosen for these specific characteristics, are necessary to enhance favorable genetic linkage and to generate new basic segregating populations with high genetic variability for these traits. |
| format | Article |
| id | doaj-art-1203e35c45424dafa01979e484347c3a |
| institution | DOAJ |
| issn | 1854-1941 |
| language | English |
| publishDate | 2021-07-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Acta Agriculturae Slovenica |
| spelling | doaj-art-1203e35c45424dafa01979e484347c3a2025-08-20T02:52:55ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Acta Agriculturae Slovenica1854-19412021-07-01117211610.14720/aas.2021.117.2.202119413Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indicesRadhia MEKAOUSSI0Abou-bakr RABTI1Zine El Abidine FELLAHI2Abderrahmane HANNACHI3Amar BENMAHAMMED4Hamenna BOUZERZOUR5Department of Agronomy, Valorization of Natural Biological Resources Laboratory, Faculty of Natural and Life Sciences, University of Ferhat Abbas Setif-1, 19000 Setif, AlgeriaInstitute of Agriculture and Veterinary Sciences, University of Mohamed-Cherif Messaadia, 41000 Souk Ahras, AlgeriaDepartment of Agronomy, Faculty of Natural, Life and Earth Sciences and the Universe, University of Mohamed El Bachir El Ibrahimi, 34034 Bordj Bou Arreridj, AlgeriaNational Agronomic Research Institute of Algeria (INRAA), Setif Research Unit, 19000 Setif, AlgeriaDepartment of Ecology and Plant Biology, Valorization of Natural Biological Resources Laboratory, Faculty of Natural and Life Sciences, University of Ferhat Abbas Setif-1, 19000 Setif, AlgeriaDepartment of Ecology and Plant Biology, Valorization of Natural Biological Resources Laboratory, Faculty of Natural and Life Sciences, University of Ferhat Abbas Setif-1, 19000 Setif, AlgeriaThe present study aimed to investigate the extent of variability and relationships between grain yield and morpho-physiological durum wheat traits. Sufficient variability was observed for most characters. Based on stress indices, either widely or specifically, adapted lines were identified. Path analysis pointed out to above ground biomass, harvest index, spike fertility and spike number as yield determinants, suggesting that these traits are of interest in the breeding program. The measured traits were classified within 6 principal components accounting for 79.45 % of the total variation. Breeding lines dispersed along first principal component exhibited substantial differences in performance and stress tolerance abilities. Cluster C3 lines were high yielding and stress tolerant. From this cluster, lines L24 and L14 were scored as the best for 7 and 5 traits out of 17 characters, respectively. Both lines are proposed for release and as parents in crosses to take advantage of their desirable characteristics. The results indicated that physiological traits were unrelated to each other and to morphological traits making difficult the concomitant selection for yield and stress tolerance driven by these traits. Complexes crosses, between parents carefully chosen for these specific characteristics, are necessary to enhance favorable genetic linkage and to generate new basic segregating populations with high genetic variability for these traits.https://journals.uni-lj.si/aas/article/view/13021durum wheatgrain yieldgenotype x environment interactionphysiological traitstolerance indicespath analysiscluster |
| spellingShingle | Radhia MEKAOUSSI Abou-bakr RABTI Zine El Abidine FELLAHI Abderrahmane HANNACHI Amar BENMAHAMMED Hamenna BOUZERZOUR Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices Acta Agriculturae Slovenica durum wheat grain yield genotype x environment interaction physiological traits tolerance indices path analysis cluster |
| title | Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices |
| title_full | Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices |
| title_fullStr | Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices |
| title_full_unstemmed | Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices |
| title_short | Assessment of durum wheat (Triticum durum Desf.) genotypes based on their agro-physiological characteristics and stress tolerance indices |
| title_sort | assessment of durum wheat triticum durum desf genotypes based on their agro physiological characteristics and stress tolerance indices |
| topic | durum wheat grain yield genotype x environment interaction physiological traits tolerance indices path analysis cluster |
| url | https://journals.uni-lj.si/aas/article/view/13021 |
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