Developing a Mini-Core Collection in Finger Millet Using Multilocation Data

Upadhyaya, H D and Sarma, N D R K and Ravishankar, C R and Albrecht, T and Narasimhudu, Y and Singh, S K and Varshney, S K and Reddy, V G and Singh, Sube and Dwivedi, S L and Wanyera, N and Oduori, C O A and Mgonja, M A and Kisandu, D B and Parzies, H K and Gowda, C L L (2010) Developing a Mini-Core Collection in Finger Millet Using Multilocation Data. Crop Science, 50 (5). pp. 1924-1931. ISSN 1435-0653

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Abstract

Finger millet [Eleusine coracana (L.) Gaertn.], among small millets, is the most important food crop in some parts of Asia and Africa. The grains are a rich source of protein, fi ber, minerals, and vitamins. A core collection of 622 accessions was developed. The aim of this study was to develop a mini-core collection using multilocational evaluation data of the core collection. Six hundred and twenty-two accessions together with six controls (four common and two location-specifi c) were evaluated for 20 morphological descriptors at fi ve agroecologically diverse locations in India during the 2008 rainy season. The experiment was conducted in α design with two replications at Patancheru and in augmented design with one of the six controls repeated after every nine-test entry at other locations. The hierarchical cluster analysis of data using phenotypic distances resulted in 40 clusters. From each cluster, ~10% or a minimum of 1 accession was selected to form a mini-core, which was comprised of 80 accessions. The comparison of means, variances, frequency distribution, Shannon–Weaver diversity index (H`), and phenotypic correlations revealed that the mini-core captured the entire diversity of the core collection. This mini-core collection is an ideal pool of diverse germplasm for identifying new sources of variation and enhancing the genetic potential of fi nger millet.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Agro Tags: <b>Agrotags</b> - millets | crops | genetics | planting | grain | research | sampling | social groups | plant habit | germplasm <br><b>Fishtags</b> - NOT-AVAILABLE<br><b>Geopoliticaltags</b> - india | zimbabwe | uganda | kenya | africa | nepal | asia | malawi | zambia | europe
Subjects: Mandate crops > Millets
Depositing User: Siva Shankar
Date Deposited: 09 Jun 2011 08:49
Last Modified: 11 Nov 2011 08:08
URI: http://oar.icrisat.org/id/eprint/76
Official URL: http://dx.doi.org/10.2135/cropsci2009.11.0689
Projects: UNSPECIFIED
Funders: BMZ/GTZ
Acknowledgement: The authors gratefully acknowledge the fi nancial support of the BMZ/GTZ project on “Sustainable conservation and utilization of genetic resources of two underutilized crops—fi nger millet and foxtail millet—to enhance productivity, nutrition and income in Africa and Asia.
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