Characterization of Old and Recent Durum Wheat [Triticum turgidum (L.) Tell. convar. durum (Desf.) Mackey] Varieties Assessed under South Mediterranean Conditions | ||
| Egyptian Journal of Agronomy test test test test test test long long test toooooooooooo longgggg | ||
| Article 7, Volume 42, Issue 3, December 2020, Pages 307-320 PDF (1.13 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/agro.2020.43329.1230 | ||
| Authors | ||
| Abou-bakr Rabti1, 2; Radhia Mekaoussi1; Zine El Abidine Fellahi* 3; Abderrahmane Hannachi4; Abdelkader Benbelkacem5; Amar Benmahammed6; Hamenna Bouzerzour6 | ||
| 1Department of Agronomy, Valorization of Natural Biological Resources Laboratory, Faculty of Natural and Life Sciences, University of Ferhat Abbas Setif-1, Setif, 19000, Algeria | ||
| 2Institute of Agriculture and Veterinary Sciences, University of Mohamed-Cherif Messaadia, Souk Ahras, 41000, Algeria | ||
| 3Department of Agronomy, Faculty of Natural, Life and Earth Sciences and the Universe, University of Mohamed El Bachir El Ibrahimi, Bordj Bou Arreridj, 34034, Algeria | ||
| 4National Agronomic Research Institute of Algeria (INRAA), Setif Research Unit, Setif, 19000, Algeria | ||
| 5National Agronomic Research Institute of Algeria (INRAA), Khroub Research Unit, Constantine, 25100, Algeria | ||
| 6Department 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, Algeria | ||
| Abstract | ||
| THE existing work aimed at evaluation of 58 old and modern durum wheat grown under south Mediterranean conditions. The experiment was conducted in a randomized complete block design at two locations (ITGC-AES of Setif and Khroub, Algeria) considered during two successive winter seasons of 2015/16 and 2016/17. Results indicated that, averaged across seasons and locations, modern varieties outperformed older varieties in terms of grain yield, spike number, spike weight, number of kernels per square meter, harvest index, spike fertility and stay green. Old varieties surpassed the modern ones in terms of straw yield, lateness, tallness and flag leaf area. Whereas, modern varieties were stress tolerant and more responsive to improved growth conditions, showing agronomic stability type. Old varieties were characterized by a minimal responsiveness to improved environmental conditions, stress tolerance, and biological stability type. Pearson’s correlation coefficients and path analyses indicate that, in both sources of germoplasm, the strong influence of biomass, spike number, spike fertility and harvest index on grain yield. Physiological traits had negligible direct effects and small indirect effects via biomass, spike number and harvest index. Lastly, principal component analysis revealed that old varieties represent an important gene pool for important traits among which plant height and straw yield. Furthermore, the differences between both sources of germoplasm can be usefully used in breeding program (Gene-bank) to enhance yield potential, stability and resilience to changing climate of the future varieties. | ||
| Keywords | ||
| Durum wheat; Old varieties; Path analysis; Physiological traits; Stress tolerance index | ||
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