Abstract
Correlation and path analysis is the most important analysis that provides a better understanding of the magnitude, direction and actual contribution of traits on yield that are very useful in the selection of genotypes from the different genetic populations. Thus, the current study consists of forty-nine tef genotypes were evaluated under with and without lime treated soils in the lat house of Assosa Agricultural Research Centre during 2017 to study the association between yield and yield component; and identify the most influential traits under both soil conditions. At both phenotypic and genotypic levels grain yield was significantly (p < 0.01) and positively correlated with harvest index (r>0.90), yield of primary panicle (r>0.50), panicle weight (r>0.40) and negatively correlated with days to maturity (r<-0.50) under both soil environments and with days to heading (r<-0.30) only under acid soil. This indicates the improvement of these traits would contribute to the higher grain yield of tef. Path coefficient analysis revealed shoot biomass yield and harvest index were the most influential traits that determined grain yield under both soil environments. Therefore, the focus should be given for these traits during the selection of high yielding genotypes of tef. Keywords: correlation, direct effect, grain yield, indirect effect DOI: 10.7176/ALST/86-03 Publication date: March 31 st 2021
Highlights
Tef is a cereal crop that widely cultivated throughout Ethiopia as a staple crop
The genotypic correlation coefficients were higher in magnitude than the phenotypic correlation coefficients for almost all characters indicating the presence of inherent genetic relationships among various characters, the effects of the environment observed on the traits
Grain yield showed significant (
Summary
Tef is a cereal crop that widely cultivated throughout Ethiopia as a staple crop. It is highly nutritious, excellent in amino acid composition and its lysine content is higher than that of all cereals except rice and oats (Melak-Hail, 1966, Seyfu, 1997). Tef covers about 3 million hectares of land and widely cultivated in Oromia, Amhara, Tigray, SNNPR and Benishangul Gumuz regions of Ethiopia. The average productivity of tef is about 1.75 tons hectare-1 at the country level (CSA, 2018). It is still low and not sufficiently fulfills the demands in the country
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