Yield stability and adaptability of sorghum genotypes under water-deficit environments
Said, A., Mobarak, N., Mustafa, A., Abou-Elwafa, S. (2022). Yield stability and adaptability of sorghum genotypes under water-deficit environments. EKB Journal Management System, 7(2), 190-210. doi: 10.21608/jsasj.2022.284269
Alaa Ali Said; Nafisa A. M. Mobarak; Abdel-Rahman A. Mustafa; Salah F. Abou-Elwafa. "Yield stability and adaptability of sorghum genotypes under water-deficit environments". EKB Journal Management System, 7, 2, 2022, 190-210. doi: 10.21608/jsasj.2022.284269
Said, A., Mobarak, N., Mustafa, A., Abou-Elwafa, S. (2022). 'Yield stability and adaptability of sorghum genotypes under water-deficit environments', EKB Journal Management System, 7(2), pp. 190-210. doi: 10.21608/jsasj.2022.284269
Said, A., Mobarak, N., Mustafa, A., Abou-Elwafa, S. Yield stability and adaptability of sorghum genotypes under water-deficit environments. EKB Journal Management System, 2022; 7(2): 190-210. doi: 10.21608/jsasj.2022.284269

Yield stability and adaptability of sorghum genotypes under water-deficit environments

Journal of Sohag Agriscience (JSAS)
Volume 7, Issue 2, December 2022, Page 190-210  XML PDF (2.09 MB)
Document Type: Research and Review Papers
DOI: 10.21608/jsasj.2022.284269
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Authors
Alaa Ali Said email orcid 1; Nafisa A. M. Mobarak2; Abdel-Rahman A. Mustafaorcid 3; Salah F. Abou-Elwafa4
1Department of Agronomy, Faculty of Agriculture, Sohag University, Egypt
2Agronomy Department Faculty of Agriculture Sohag University Sohag 82524 Egypt
3Soil and Water Department, Faculty of Agriculture Sohag University Sohag 82524 Egypt
4Agronomy Department Faculty of Agriculture Assiut University Assiut Egypt
Abstract
Unraveling the genetic factors underlying sorghum response to drought stress can speed up the development of drought-tolerant sorghum cultivars. To achieve this goal, we evaluated a collection of sorghum bicolor lines and two local cultivars for yield and yield related traits under three different watering regimes (Well-watered = 0.8 Evapotranspiration (ETp), Mild drought stress = 0.6 ETp and severe drought stress = 0.4 ETp.) in two consecutive growing seasons in Egypt. Analysis of variance showed highly significant variations among the tested sorghum genotypes. As an average of all tested genotypes number of grains/head was the most affected trait by drought followed by grain yield / plant, while head length showed the lowest reduction due to drought stress. According to four models viz., Eberhart and Russell's, Perkins and Jinks, Freeman and Perkins and Tai, beside principal component analysis (PCA), Line No. 22 (34.81 g) and cultivar Dorado (33.51 g) were observed as most stable and widely adapted over environments, surprised mean performance for grain yield/plant than grand mean over environments. According to our results the two genotypes (Line No. 22 and cultivar Dorado) can be recommended to be uses under a wide range of environmental conditions and use in breeding programs for development of high yield stable genotypes across environments for future use.
Keywords
Sorghum bicolor; drought; grain yield; stability
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