Associations Studies Among Yield, Yield Components and Quality Traits in Advanced Bread Wheat (Triticum aestivum l.) Genotypes at Sinana, South Eastern Ethiopia
Résumé
Information on the extent of genetic variation and associations among characters is important to design optimum breeding strategies and to develop varieties for the targeted area of production. Therefore, this research was conducted at Sinana Agriculture Research Centre on testing site, south eastern Ethiopia, with the objectives of to assess associations among yield, yield components and quality traits, and to determine the extent of direct and indirect effects of yield related traits on yield. The experiment was conducted in 2020/21 cropping season using 21 promising lines and 4 released varieties in lattice Design with three replications. Data were recorded for 9 agronomic and 13 grain quality characters. Analysis of variance revealed the presence of highly significant (P ≤ 0.01) variation among genotypes. Grain yield had high genotypic correlation with day to heading, spike length and spikelet per spike in the process of selection much attention should be given to them as these characters are helpful. Day to heading and spikelets per spike had strong and positive direct effect on grain yield, but, spike length had negative direct effect.
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