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Abstract                 Volume:8  Issue-10  Year-2020          Original Research Articles


Online ISSN : 2347 - 3215
Issues : 12 per year
Publisher : Excellent Publishers
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Univariate Stability Analysis for Determining Genotype by Environment Interaction in Tef [Eragrostis tef (Zucc.) Trotter] at South and Southwestern Ethiopia
Tegegn Belete1, Kebebew Assefaand Afework Legesse3
1,3Ethiopian Institute of Agricultural Research, Jimma Research Center, P.O.Box 192, Jimma, Ethiopia
2EIAR, Debre zeit Agricultural Research Center P.O.Box, 32, Debre zeit, Ethiopia
*Corresponding author
Abstract:

Objective of the study is to identify high yielding and stable tef varieties using Univariate Stability parameters. Twenty-one released tef varieties obtained from tef breeding program based at Debre zeit Agricultural Research center and evaluated in 2018 main cropping season. The experiment was conducted using randomized complete block design in three replication across six locations. Data for all relevant agronomic traits were collected, but only plot yield data converted to kg/ha was subjected to statistical analysis Combined analysis of variance indicated that genotype by environment interaction significantly influenced grain yield performance of tef varieties across locations. Different stability parameters identified different stable varieties. According to coefficient of determination G2, G9 and G8 were stable and coefficient of variation identified G21,G18 and G14 as stable varieties. Variety G13, G12 and G6 and G15,G11 and G1 were stable according to wricke’s ecovalence and cultivar superiority respectively. Pekins and Jinks for tef varieties identified G11,G10 and G6 as stable varieties. According to non parametric stability (S1 and S2) variety G11, G12 and G21 and G11, G15 and G4 identified stable varieties respectively. Based on some of the stability parameters and mean performance G11, variety Heber-1 (1034.1kg/ha), G1, variety Quncho (959kg/ha) and G15, variety Dukem (1086.3kg/ha) were the most stable and recommended for their broad adaptation of south and southwestern Ethiopia.

Keywords: Correlation, Genotype x environment interaction, Stability parameter, Univariate
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How to cite this article:

Tegegn Belete, Kebebew Assefa and Afework Legesse. 2020. Univariate Stability Analysis for Determining Genotype by Environment Interaction in Tef [Eragrostis tef (Zucc.) Trotter] at South and Southwestern Ethiopia.Int.J.Curr.Res.Aca.Rev. 8(10): 37-45
doi: https://doi.org/10.20546/ijcrar.2020.810.006