University of Tasmania
Browse

File(s) under permanent embargo

Stability of quantitative trait loci for growth and wood properties across multiple pedigrees and environments in Eucalyptus globulus

journal contribution
posted on 2023-05-17, 17:28 authored by Jules FreemanJules Freeman, Bradley PottsBradley Potts, Downes, GM, Pilbeam, D, Thavamanikumar, S, Rene VaillancourtRene Vaillancourt
- Eucalypts are one of the most planted tree genera worldwide, and there is increasing interest in marker-assisted selection for tree improvement. Implementation of marker-assisted selection requires a knowledge of the stability of quantitative trait loci (QTLs). This study aims to investigate the stability of QTLs for wood properties and growth across contrasting sites and multiple pedigrees of Eucalyptus globulus. - Saturated linkage maps were constructed using 663 genotypes from four separate families, grown at three widely separated sites, and were employed to construct a consensus map. This map was used for QTL analysis of growth, wood density and wood chemical traits, including pulp yield. - Ninety-eight QTLs were identified across families and sites: 87 for wood properties and 11 for growth. These QTLs mapped to 38 discrete regions, some of which co-located with candidate genes. Although 16% of QTLs were verified across different families, 24% of wood property QTLs and 38% of growth QTLs exhibited significant genotype-by-environment interaction. - This study provides the most detailed assessment of the effect of environment and pedigree on QTL detection in the genus. Despite markedly different environments and pedigrees, many QTLs were stable, providing promising targets for the application of marker-assisted selection.

Funding

CRC Forestry Ltd

History

Publication title

New Phytologist

Volume

198

Issue

4

Pagination

1121-1134

ISSN

0028-646X

Department/School

School of Natural Sciences

Publisher

Wiley-Blackwell Publishing Ltd.

Place of publication

Oxford, UK

Rights statement

Copyright 2013 The Authors

Repository Status

  • Restricted

Socio-economic Objectives

Hardwood plantations

Usage metrics

    University Of Tasmania

    Categories

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC