Morphological and genetic characterisation of the root system architecture of selected barley recombinant chromosome substitution lines using an integrated phenotyping approach

C. De La Fuente Canto, Dimitris I. Kalogiros, Mariya Ptashnyk, T. S. George, R. Waugh, A. Glyn Bengough, J. Russell, Lionel X. Dupuy

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Discoveries on the genetics of resource acquisition efficiency are limited by the ability to measure plant roots in sufficient number and with adequate genotypic variability. This paper presents a root phenotyping study that explores ways to combine live imaging and computer algorithms for model-based extraction of root growth parameters. The study is based on a subset of barley Recombinant Chromosome Substitution Lines (RCSLs) and a combinatorial approach was designed for fast identification of the regions of the genome that contribute the most to variations in root system architecture (RSA). Results showed there was a strong genotypic variation in root growth parameters within the set of genotypes studied. The chromosomal regions associated with primary root growth differed from the regions of the genome associated with changes in lateral root growth. The concepts presented here are discussed in the context of identifying root QTL and its potential to assist breeding for novel crops with improved root systems.

Original languageEnglish
Pages (from-to)84-97
Number of pages14
JournalJournal of Theoretical Biology
Volume447
Early online date17 Mar 2018
DOIs
Publication statusPublished - 14 Jun 2018

Keywords

  • Barley
  • Computer-assisted breeding
  • Growth parameters
  • QTL
  • RCSL
  • Root phenotyping

ASJC Scopus subject areas

  • Statistics and Probability
  • Modelling and Simulation
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

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