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Adult plant development in triticale (× triticosecale wittmack) is controlled by dynamic genetic patterns of regulation.

Authors
  • Würschum, Tobias1
  • Liu, Wenxin2
  • Alheit, Katharina V3
  • Tucker, Matthew R4
  • Gowda, Manje3
  • Weissmann, Elmar A5
  • Hahn, Volker3
  • Maurer, Hans Peter3
  • 1 State Plant Breeding Institute, University of Hohenheim, 70599 Stuttgart, Germany [email protected] , (Germany)
  • 2 Crop Genetics and Breeding Department, China Agricultural University, 100193 Beijing, China. , (China)
  • 3 State Plant Breeding Institute, University of Hohenheim, 70599 Stuttgart, Germany. , (Germany)
  • 4 ARC Centre of Excellence for Plant Cell Walls, University of Adelaide, Waite Campus, Urrbrae SA 5064, Australia. , (Australia)
  • 5 Saatzucht Dr. Hege GbR Domäne Hohebuch, 74638 Waldenburg, Germany. , (Germany)
Type
Published Article
Journal
G3 Genes|Genome|Genetics
Publisher
The Genetics Society of America
Publication Date
Sep 18, 2014
Volume
4
Issue
9
Pages
1585–1591
Identifiers
DOI: 10.1534/g3.114.012989
PMID: 25237110
Source
Medline
Keywords
License
Unknown

Abstract

Many biologically and agronomically important traits are dynamic and show temporal variation. In this study, we used triticale (× Triticosecale Wittmack) as a model crop to assess the genetic dynamics underlying phenotypic plasticity of adult plant development. To this end, a large mapping population with 647 doubled haploid lines derived from four partially connected families from crosses among six parents was scored for developmental stage at three different time points. Using genome-wide association mapping, we identified main effect and epistatic quantitative trait loci (QTL) at all three time points. Interestingly, some of these QTL were identified at all time points, whereas others appear to only contribute to the genetic architecture at certain developmental stages. Our results illustrate the temporal contribution of QTL to the genetic control of adult plant development and more generally, the temporal genetic patterns of regulation that underlie dynamic traits.

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