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Morphological diversity of Ethiopian barleys (Hordeum vulgare L.) in relation to geographic regions and altitudes

Identifieur interne : 001222 ( Istex/Corpus ); précédent : 001221; suivant : 001223

Morphological diversity of Ethiopian barleys (Hordeum vulgare L.) in relation to geographic regions and altitudes

Auteurs : Tiegist Dejene Abebe ; Andrea Michaela Bauer ; Jens Léon

Source :

RBID : ISTEX:20BC7AB852BB0E85C822F010F6A2FA55E357A33F

Abstract

A total of 199 germplasm accessions collected from 10 administrative regions of Ethiopia and four released cultivars, which were used for estimating of error variance, of barley in Ethiopia were field evaluated for nine agronomic traits at Holetta and Bekoji Agricultural Research Centers of Ethiopia during the 2006 main cropping season using non‐replicated augmented design plots consisting of four incomplete blocks. The objectives were to assess the extent and pattern of morphological variation in the barley accessions with respect to regions and altitude of collection, to classify the genotypes tested into relatively homogenous groups and to identify the major traits contributing to the overall observed diversity in the germplasm. Genotype variance estimate of regions and altitudes indicated wide variation among accessions depending on the traits involved. The presence of high morphological variation within regions and altitudes particularly above 2000 m a.s.l. indicated the potential of each region and high altitude zones for barley improvement and conservation in the country. The clustering of accessions did not show grouping on the basis of regions of origin. Traits like thousand kernel weight, plant height, days to head and days to maturity accounted for most of the gross variance among the barley accessions and played role in differentiating accessions collected from different regions and altitude classes into principal components. In general because of environmental factors on the observed morphological variation future germplasm collection should consider to explore wide geographical and climatic differences within the country.

Url:
DOI: 10.1111/j.1601-5223.2010.02173.x

Links to Exploration step

ISTEX:20BC7AB852BB0E85C822F010F6A2FA55E357A33F

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<abstract lang="en">A total of 199 germplasm accessions collected from 10 administrative regions of Ethiopia and four released cultivars, which were used for estimating of error variance, of barley in Ethiopia were field evaluated for nine agronomic traits at Holetta and Bekoji Agricultural Research Centers of Ethiopia during the 2006 main cropping season using non‐replicated augmented design plots consisting of four incomplete blocks. The objectives were to assess the extent and pattern of morphological variation in the barley accessions with respect to regions and altitude of collection, to classify the genotypes tested into relatively homogenous groups and to identify the major traits contributing to the overall observed diversity in the germplasm. Genotype variance estimate of regions and altitudes indicated wide variation among accessions depending on the traits involved. The presence of high morphological variation within regions and altitudes particularly above 2000 m a.s.l. indicated the potential of each region and high altitude zones for barley improvement and conservation in the country. The clustering of accessions did not show grouping on the basis of regions of origin. Traits like thousand kernel weight, plant height, days to head and days to maturity accounted for most of the gross variance among the barley accessions and played role in differentiating accessions collected from different regions and altitude classes into principal components. In general because of environmental factors on the observed morphological variation future germplasm collection should consider to explore wide geographical and climatic differences within the country.</abstract>
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<titleInfo>
<title>Hereditas</title>
</titleInfo>
<titleInfo type="abbreviated">
<title>Hereditas</title>
</titleInfo>
<genre type="journal">journal</genre>
<identifier type="ISSN">0018-0661</identifier>
<identifier type="eISSN">1601-5223</identifier>
<identifier type="DOI">10.1111/(ISSN)1601-5223</identifier>
<identifier type="PublisherID">HRD2</identifier>
<part>
<date>2010</date>
<detail type="volume">
<caption>vol.</caption>
<number>147</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>4</number>
</detail>
<extent unit="pages">
<start>154</start>
<end>164</end>
<total>11</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">20BC7AB852BB0E85C822F010F6A2FA55E357A33F</identifier>
<identifier type="DOI">10.1111/j.1601-5223.2010.02173.x</identifier>
<identifier type="ArticleID">HRD22173</identifier>
<accessCondition type="use and reproduction" contentType="copyright">© 2010 The Authors</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
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<serie></serie>
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   |texte=   Morphological diversity of Ethiopian barleys (Hordeum vulgare L.) in relation to geographic regions and altitudes
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