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\hypersetup{pdftitle={Diversity and Nutritional Quality of Landraces of Naked Barley (\textit{Hordeum vulgare} L. var. \textit{nudum} Hook. F.-- Poaceae) in Ethiopia},pdfauthor={Mekides Woldegiorgis Gardi, Zemede Asfaw, Berhane Lakew},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Naked barley, nutrient content, phenotypic diversity},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Diversity and Nutritional Quality of Landraces of Naked Barley (\textit{Hordeum vulgare} L. var. \textit{nudum} Hook. F.-- Poaceae) in Ethiopia\footnote{\textbf{Contact Address:} Mekides Woldegiorgis Gardi, Addis Ababa University, Plant Biology and Biodiversity Management, Addis Ababa, Ethiopia, \mbox{e-mail}: \email{giorgis76m@gmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Mekides Woldegiorgis Gardi$^{1}$, Zemede Asfaw$^{1}$, Berhane Lakew$^{2}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$Addis Ababa University, Plant Biology and Biodiversity Management, Ethiopia}}}
\item[]{\small{\textit{$^{2}$Holleta Agricultural Research Center (HARC), Cereal Crops, Ethiopia}}}
\end{itemize*}
\index[author]{Gardi, Mekides Woldegiorgis}
\index[author]{Asfaw, Zemede}
\index[author]{Lakew, Berhane}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Morphological traits and chemical composition were used to study the diversity and nutrient content of naked barley germplasm accessions in Ethiopia and some introduced naked barley accessions. A total of 26 land"=races collected from 12 administrative regions of Ethiopia, 14 introduced cultivars and five locally released cultivars of naked barley were used. For the morphological data; experiments were conducted in Holetta agricultural research centre of Ethiopia, and the laboratory work for chemical composition was conducted in laboratory of Ethiopian Public Health (EPHI) Addis Ababa, Ethiopia. The objectives of this study were (1) to assess the extent of morphological in respect to regions and altitude of collection, (2) to cluster the accessions into relatively homogenous groups and to identify the major traits contributing to the overall diversity of the germplasm, (3) to determine proximate and anti"=nutritional characteristics of naked barley seeds and (4) finally to identify traits which undergo selection pressure. The analysis of variance for regions and altitudinal class showed morphological variation of naked barley. Presence of high morphological variation within regions and altitudes above 2000 m a.s.l indicated the potential of each region and higher altitudes in contributing towards naked barley improvement and conservation activities. Clustering of accessions was not dependent on geographic regions whereas the well adapted traits like days to heading, days to maturity, plant height and awn length, played a role in differentiating accessions collected from different regions and altitude classes into principal components. The chemical components: total ash, crude protein, crude fiber, crude fat, minerals and ant nutritional factors (tannin and phytate) differed statistically (P$\leq$0.05) between the naked barley varieties. From this study it can be concluded that high phenotypic variability exists in the naked barley germplasm of Ethiopia. }

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\noindent \textbf{Keywords:} Naked barley, nutrient content, phenotypic diversity
\index[key]{Naked barley}
\index[key]{Phenotypic diversity}
\index[key]{Barley}
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