A multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.)

Publication Overview
TitleA multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.)
AuthorsHuynh BL, Ehlers JD, Huang BE, Muñoz-Amatriaín M, Lonardi S, Santos JRP, Ndeve A, Batieno BJ, Boukar O, Cisse N, Drabo I, Fatokun C, Kusi F, Agyare RY, Guo YN, Herniter I, Lo S, Wanamaker SI, Xu S, Close TJ, Roberts PA
TypeJournal Article
Journal NameThe Plant journal : for cell and molecular biology
Volume93
Issue6
Year2018
Page(s)1129-1142
CitationHuynh BL, Ehlers JD, Huang BE, Muñoz-Amatriaín M, Lonardi S, Santos JRP, Ndeve A, Batieno BJ, Boukar O, Cisse N, Drabo I, Fatokun C, Kusi F, Agyare RY, Guo YN, Herniter I, Lo S, Wanamaker SI, Xu S, Close TJ, Roberts PA. A multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.). The Plant journal : for cell and molecular biology. 2018 03; 93(6):1129-1142.

Abstract

Multi-parent advanced generation inter-cross (MAGIC) populations are an emerging type of resource for dissecting the genetic structure of traits and improving breeding populations. We developed a MAGIC population for cowpea (Vigna unguiculata L. Walp.) from eight founder parents. These founders were genetically diverse and carried many abiotic and biotic stress resistance, seed quality and agronomic traits relevant to cowpea improvement in the United States and sub-Saharan Africa, where cowpea is vitally important in the human diet and local economies. The eight parents were inter-crossed using structured matings to ensure that the population would have balanced representation from each parent, followed by single-seed descent, resulting in 305 F8 recombinant inbred lines each carrying a mosaic of genome blocks contributed by all founders. This was confirmed by single nucleotide polymorphism genotyping with the Illumina Cowpea Consortium Array. These lines were on average 99.74% homozygous but also diverse in agronomic traits across environments. Quantitative trait loci (QTLs) were identified for several parental traits. Loci with major effects on photoperiod sensitivity and seed size were also verified by biparental genetic mapping. The recombination events were concentrated in telomeric regions. Due to its broad genetic base, this cowpea MAGIC population promises breakthroughs in genetic gain, QTL and gene discovery, enhancement of breeding populations and, for some lines, direct releases as new varieties.
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Projects
This publication contains information about 1 projects:
Project NameDescription
Cowpea-Growth_and_development-Huynh-2018
Featuremaps
This publication contains information about 1 maps:
Map Name
Cowpea-UCR_MAGIC_2018-MAGIC
Stocks
This publication contains information about 1 stocks:
Stock NameUniquenameType
UCR_MAGIC_2018UCR_MAGIC_2018population
Properties
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Property NameValue
Copyright© 2018 The Authors. The Plant Journal published by John Wiley & Sons Ltd and Society for Experimental Biology.
DOI10.1111/tpj.13827
eISSN1365-313X
Elocation10.1111/tpj.13827
ISSN1365-313X
Journal AbbreviationPlant J.
Journal CountryEngland
LanguageEnglish
Language Abbreng
Publication Date2018 03
Publication ModelPrint-Electronic
Publication TypeJournal Article
Publication TypeResearch Support, Non-U.S. Gov't
Publication TypeResearch Support, U.S. Gov't, Non-P.H.S.