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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
An integrated genetic map and a new set of simple sequence repeat markers for pearl millet, Pennisetum glaucum
Theoretical and Applied Genetics, Volume 109, No. 7, Year 2004
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Description
Over the past 10 years, resources have been established for the genetic analysis of pearl millet, Pennisetum glaucum (L.) R. Br., an important staple crop of the semi-arid regions of India and Africa. Among these resources are detailed genetic maps containing both homologous and heterologous restriction fragment length polymorphism (RFLP) markers, and simple sequence repeats (SSRs). Genetic maps produced in four different crosses have been integrated to develop a consensus map of 353 RFLP and 65 SSR markers. Some 85% of the markers are clustered and occupy less than a third of the total map length. This phenomenon is independent of the cross. Our data suggest that extreme localization of recombination toward the chromosome ends, resulting in gaps on the genetic map of 30 cM or more in the distal regions, is typical for pearl millet. The unequal distribution of recombination has consequences for the transfer of genes controlling important agronomic traits from donor to elite pearl millet germplasm. The paper also describes the generation of 44 SSR markers from a (CA)n-enriched small-insert genomic library. Previously, pearl millet SSRs had been generated from BAC clones, and the relative merits of both methodologies are discussed. © Springer-Verlag 2004.
Authors & Co-Authors
Qi, X.
United Kingdom, Norwich
John Innes Centre
Pittaway, T. S.
United Kingdom, Norwich
John Innes Centre
Lindup, S.
United Kingdom, Norwich
John Innes Centre
Liu, H.
United Kingdom, Norwich
John Innes Centre
United Kingdom, Aberdeen
The James Hutton Institute
Waterman, E.
United Kingdom, Norwich
John Innes Centre
Padi, Francis Kwame
United Kingdom, Norwich
John Innes Centre
Ghana, Tamale
Csir - Savanna Agricultural Research Institute
Hash, Charles Tom
India, Patancheru
International Crops Research Institute for the Semi-arid Tropics
Zhu, J.
United Kingdom, Norwich
John Innes Centre
Gále, Michael D.G.
United Kingdom, Norwich
John Innes Centre
Devos, Katrien Martha D.
United Kingdom, Norwich
John Innes Centre
United States, Athens
University of Georgia
Statistics
Citations: 153
Authors: 10
Affiliations: 5
Identifiers
Doi:
10.1007/s00122-004-1765-y
ISSN:
00405752
Research Areas
Genetics And Genomics