Use of multivariate stability statistics to identify superior tef (Eragrostis tef [Zucc.] Trotter) genotypes in Northeast Ethiopia

Year 2021, , 124 - 129, 01.10.2021

Fisseha Worede

https://doi.org/10.47115/bsagriculture.876794

Cited By: 1

Abstract

Tef (Eragrostis tef [Zucc.] Trotter) is a tiny-seeded cereal with huge importance in Ethiopia. Creation of variability by hybridization and the subsequent selection of RILs is very important towards variety development. In order to identify superior tef genotypes, evaluation of RILs was performed on eight environments using three times replicated randomized complete block design. The result revealed that genotypes (G), environments (E) and genotype-environment interaction (G×E) significantly (p<0.01) influenced grain yield of tef. Considering the yield of genotypes on individual locations, the highest grain yield (4.27 t ha-1) was recorded by the genotype RIL273. The AMMI analysis showed that environment was the major contributor of the variation in grain yield; it also revealed that the best fit model was AMMI2 as the G×E was partitioned into two significant (p<0.01) Interaction Principal Component Axes (IPCAs). The two IPCAs explained 67.56% of the G×E variance. The GGE biplot identified genotype RIL273 as the most desirable (high-yielding and stable) genotype. RIL273 is as early maturing, significantly taller and had higher yield (biomass and grain) than the checks. The genotype was released for the Northeastern part of Ethiopia and named as Lakech. It has a very white seed, more preferred by consumers and have premium price at the market. Being adapted to the semi-arid areas, having higher yield and very white seed color, this variety will contribute to food security of the area.

Keywords

AMMI, Eragrostis tef, GxE, GGE, Multivariate Stability

Supporting Institution

Amhara Regional Agricultural Research Institute (ARARI)

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