Association mapping of flowering and height traits in germplasm enhancement of maize doubled haploid (GEM-DH) lines

Adam Vanous, Candice Gardner, Michael Blanco, Adam Martin-Schwarze, Alexander E. Lipka, Sherry Flint-Garcia, Martin Bohn, Jode Edwards, Thomas Lübberstedt

Research output: Contribution to journalArticle

Abstract

Flowering and height related traits are extensively studied in maize for three main reasons: 1) easily obtained phenotypic measurements, 2) highly heritable, and 3) importance of these traits to adaptation and grain yield. However, variation in flowering and height traits is extensive and findings from previous studies are genotype specific. Herein, a diverse panel of exotic derived doubled haploid lines, in conjunction with genome-wide association analysis, is used to further explore adaptation related trait variation of exotic germplasm for potential use in adapting exotic germplasm to the U.S. Corn-Belt. Phenotypes for the association panel were obtained from six locations across the central-U.S. and genotyping was performed using the genotyping-by-sequencing method. Nineteen flowering time candidate genes were found for three flowering traits. Eighteen candidate genes were found for four height related traits, with the majority of the candidate genes relating to plant hormones auxin and gibberellin. A single gene was discovered for ear height that also had effects on FT-like flowering gene expression levels. Findings will be used to inform future research efforts of the USDA Germplasm Enhancement of Maize project and eventually aid in the rapid adaptation of exotic germplasm to temperate U.S. environments.

Original languageEnglish (US)
Article number170083
JournalPlant Genome
Volume11
Issue number2
DOIs
StatePublished - Jul 2018

Fingerprint

Haploidy
doubled haploids
genetic improvement
Zea mays
chromosome mapping
flowering
corn
germplasm
Genes
genotyping
Gibberellins
United States Department of Agriculture
Corn Belt region
genes
Indoleacetic Acids
Plant Growth Regulators
Genome-Wide Association Study
Ear
USDA
gibberellins

ASJC Scopus subject areas

  • Genetics
  • Agronomy and Crop Science
  • Plant Science

Cite this

Vanous, A., Gardner, C., Blanco, M., Martin-Schwarze, A., Lipka, A. E., Flint-Garcia, S., ... Lübberstedt, T. (2018). Association mapping of flowering and height traits in germplasm enhancement of maize doubled haploid (GEM-DH) lines. Plant Genome, 11(2), [170083]. https://doi.org/10.3835/plantgenome2017.09.0083

Association mapping of flowering and height traits in germplasm enhancement of maize doubled haploid (GEM-DH) lines. / Vanous, Adam; Gardner, Candice; Blanco, Michael; Martin-Schwarze, Adam; Lipka, Alexander E.; Flint-Garcia, Sherry; Bohn, Martin; Edwards, Jode; Lübberstedt, Thomas.

In: Plant Genome, Vol. 11, No. 2, 170083, 07.2018.

Research output: Contribution to journalArticle

Vanous, A, Gardner, C, Blanco, M, Martin-Schwarze, A, Lipka, AE, Flint-Garcia, S, Bohn, M, Edwards, J & Lübberstedt, T 2018, 'Association mapping of flowering and height traits in germplasm enhancement of maize doubled haploid (GEM-DH) lines', Plant Genome, vol. 11, no. 2, 170083. https://doi.org/10.3835/plantgenome2017.09.0083
Vanous, Adam ; Gardner, Candice ; Blanco, Michael ; Martin-Schwarze, Adam ; Lipka, Alexander E. ; Flint-Garcia, Sherry ; Bohn, Martin ; Edwards, Jode ; Lübberstedt, Thomas. / Association mapping of flowering and height traits in germplasm enhancement of maize doubled haploid (GEM-DH) lines. In: Plant Genome. 2018 ; Vol. 11, No. 2.
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