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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Construction of Chromosome Segment Substitution Lines in Peanut (Arachis hypogaea L.) Using a Wild Synthetic and QTL Mapping for Plant Morphology
PLoS ONE, Volume 7, No. 11, Article e48642, Year 2012
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Description
Chromosome segment substitution lines (CSSLs) are powerful QTL mapping populations that have been used to elucidate the molecular basis of interesting traits of wild species. Cultivated peanut is an allotetraploid with limited genetic diversity. Capturing the genetic diversity from peanut wild relatives is an important objective in many peanut breeding programs. In this study, we used a marker-assisted backcrossing strategy to produce a population of 122 CSSLs from the cross between the wild synthetic allotetraploid (A. ipaënsis×A. duranensis)4x and the cultivated Fleur11 variety. The 122 CSSLs offered a broad coverage of the peanut genome, with target wild chromosome segments averaging 39.2 cM in length. As a demonstration of the utility of these lines, four traits were evaluated in a subset of 80 CSSLs. A total of 28 lines showed significant differences from Fleur11. The line×trait significant associations were assigned to 42 QTLs: 14 for plant growth habit, 15 for height of the main stem, 12 for plant spread and one for flower color. Among the 42 QTLs, 37 were assigned to genomic regions and three QTL positions were considered putative. One important finding arising from this QTL analysis is that peanut growth habit is a complex trait that is governed by several QTLs with different effects. The CSSL population developed in this study has proved efficient for deciphering the molecular basis of trait variations and will be useful to the peanut scientific community for future QTL mapping studies. © 2012 Fonceka et al.
Available Materials
https://efashare.b-cdn.net/share/pmc/articles/PMC3501512/bin/pone.0048642.s001.xlsx
Authors & Co-Authors
Foncéka, Daniel
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Tossim, Hodo Abalo
Unknown Affiliation
Rivallan, Ronan
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Vignes, Hélène
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Lacut, Elodie
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
de Bellis, Fabien
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Faye, Issa
Senegal, Dakar
Institut Sénégalais de Recherches Agricoles Dakar
Ndoye, Ousmane
Unknown Affiliation
Leal-Bertioli, Soraya C.M.
Brazil, Brasilia
Embrapa Recursos Geneticos e Biotecnologia
Valls, José Francisco Montenegro
Brazil, Brasilia
Embrapa Recursos Geneticos e Biotecnologia
Bertioli, David John
Brazil, Brasilia
Universidade de Brasília
Glaszmann, Jean Christophe
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Courtois, Brigitte
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Rami, Jean François
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Statistics
Citations: 14
Authors: 14
Affiliations: 4
Identifiers
Doi:
10.1371/journal.pone.0048642
e-ISSN:
19326203
Research Areas
Genetics And Genomics
Health System And Policy
Study Design
Cross Sectional Study
Study Approach
Qualitative