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Asian Journal of Agricultural Research
Year: 2020  |  Volume: 14  |  Issue: 1  |  Page No.: 1 - 12

Assessment of Genetic Variability among Agronomic Traits and Grain Protein Content of Elite Bread Wheat (Triticum aestivum L.) Genotypes in the Central Highlands of Ethiopia

Nesru Muhder, Mesfin Kebede Gessese and Zemach Sorsa    

Abstract: Background and Objectives: The productivity of wheat in national and central part of the country is very low as a result of inaccessibility of improved varieties and prevalence of important diseases for wheat. In view of this the present study was initiated to assess the extent of genetic variation for grain yield and other agronomic traits. Materials and Methods: The field experiment was conducted using 5×5 simple lattice design across two locations during the 2017 main cropping season. Data collected on 14 quantitative characters and grain protein content. Analysis of variance computed for each location and over locations. The results of pooled ANOVA revealed presence of significant variations among genotypes for all traits except number of productive tillers/plant. Results: The mean square for genotype×location was significant for most of the traits suggested the differential performance of genotypes at different locations. The highest grain yield was registered by ETBW9551. The genotype, ETBW 9549 had the highest grain protein content over locations. The highest PCV and GCV values were computed for number of productive tillers m2. The highest broad sense heritability (h2b) was recorded from number of productive tillers/plant while genetic advance percent mean (GAM) ranged from 1.81% for number of productive tillers/plant to 13.32% for days to heading. Conclusion: It can be concluded that the variability observed among genotypes for desirable traits including grain yield and grain protein content could be exploited in bread wheat breeding in the test locations and similar agro ecologies.

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