Genetic variability and associations among yield and yield related traits of Tef [Eragrostis tef (Zucc.) Trotter] genotypes in North Wollo, Ethiopia
Eshetie Wudu | Fikru Mekonnen
Tef, a principal cereal crop in Ethiopia, is integral to the nation’s agricultural fabric. The exploration of genetic diversity within crop species stands as a cornerstone of plant breeding, guiding the development of tailored breeding strategies. In light of this, a comprehensive field study was executed to gauge genetic variability and its correlation with yield and related attributes in tef. The 2022 season at Sirinka witnessed the assessment of sixty-four tef genotypes across fifteen traits, employing a simple lattice design. The analysis of variance underscored pronounced differences among genotypes (p < 0.01 and p < 0.05). With lodging index exhibiting the most substantial phenotypic variation (30.1%). Grain yield, biomass, and harvest index were characterized by moderate phenotypic variation (10–20%).Similarly, genotypic variation was moderate for spikelets per panicle (10.3%), grain yield (12.3%), harvest index (14.1%), and lodging index (17.9%). Notably, panicle and culm lengths demonstrated high heritability (74 and 68.9, respectively). A moderate heritability value, in tandem with genetic advance as mean percentage, was observed for spikelets per panicle, biomass, grain yield, and peduncle length. Correlation coefficients at bothgenotypic and phenotypic levels indicated a positive relationship between grain yield and spikelets per panicle, plant height, and harvest index.
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