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Patterns of molecular and phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] from West and Central Africa and their relation to geographical and environmental parameters

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Relation http://oar.icrisat.org/178/
http://dx.doi.org/10.1186/1471-2229-10-216
 
Title Patterns of molecular and phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] from West and Central Africa and their relation to geographical and environmental parameters
 
Creator Benjamin, S
Haussmann, B I G
Raj, P
Sankalp, B
Hash, C T
Melchinger, A E
Parzies, H K
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description Background: The distribution area of pearl millet in West and Central Africa (WCA) harbours a wide range of climatic and environmental conditions as well as diverse farmer preferences and pearl millet utilization habits which have the potential to lead to local adaptation and thereby to population structure. The objectives of our research were to (i) assess the geographical distribution of genetic diversity in pearl millet inbreds derived from landraces, (ii) assess the population structure of pearl millet from WCA, and (iii) identify those geographical parameters and environmental factors from the location at which landraces were sampled, as well as those phenotypic traits that may have affected or led to this population structure. Our study was based on a set of 145 inbred lines derived from 122 different pearl millet landraces from WCA.
Results: Five sub-groups were detected within the entire germplasm set by STRUCTURE. We observed that the phenotypic traits flowering time, relative response to photoperiod, and panicle length were significantly associated with population structure but not the environmental factors which are expected to influence these traits in natural populations such as latitude, temperature, or precipitation.
Conclusions: Our results suggested that for pearl millet natural selection is compared to artificial selection less
important in shaping populations.
 
Publisher BioMed Central
 
Date 2010
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/178/1/nset15.pdf
Benjamin, S and Haussmann, B I G and Raj, P and Sankalp, B and Hash, C T and Melchinger, A E and Parzies, H K (2010) Patterns of molecular and phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] from West and Central Africa and their relation to geographical and environmental parameters. BMC Plant Biology, 10 (216). pp. 1-10.