Registration of “Takusa” Tef [Eragrostis tef (Zucc) Trotter] Variety

Genotype by environment interaction; Genotype and genotype by environment interaction biplot; Ideal genotype; Lodging tolerance; Stability


June 1, 2022

Additional Files

Background: Tef is the most important staple food and it takes the largest share in annual area crop
coverage in Ethiopia. However, the productivity of the crop is far below its potential. Limited availability
of stable and high yielding improved varieties and wider use of low yielding farmers’ cultivars is one of the
major factors constraining tef productivity.
Objective: The objective of the research was to identify and release stable and high yielding tef genotypes
with desirable agronomic and morphological traits
Materials and Methods: Eighteen tef genotypes including Takusa [DZ-01-974*GA-10-3 (RIL-104)] plus
the standard (Abay) and local checks were evaluated in a regional variety trial at Adet, Mota, Bichena, Takusa
and Alem Ketema districts in northwestern part of Ethiopia during the 2018 and 2019 main rainy cropping
seasons in a randomized complete block design.
Results: The results of the combined analysis of variance for grain yield across 10 environments revealed
that the new variety, Takusa was the highest yielder among the tested genotypes. The results of genotype
plus genotype by environment interaction (GGE) biplot analysis revealed that Takusa was the most stable
and high yielding (2.4 t ha–1
) genotype from among the tested genotypes. It showed 16.7% yield advantage over the standard check, Abay.
Conclusion: Takusa gained farmers’ acclaim and acceptance for its high grain and biomass yields, wider
adaptation and other desirable agronomic and morphological traits such as white seed color, medium time
of maturity, and moderate tolerance to lodging. Takusa tef variety was officially approved for cultivation in
2021 in Adet, Mota, Bichena, Takusa, Alem ketema and similar agro-ecologies in Ethiopia.