Ref ID: 11118
Ref Type: Conference Proceeding
Authors: O'Reilly-Wapstra, J., Potts, B. M., and McArthur, C.
Date: 2004
Volume:
Num Volumes:
Edition:
Start Page: 203
End Page: 204
ISBN/ISSN:
Editors: Borralho, N. M. G., Periera, J. S., Marques, C., Coutinho, J., Madeira, M., and Tomé, M.
Conference Date: 11-15 October 2004, Aveiro, Portugal
Conference Title: Eucalyptus in a Changing World
Conference Location:
Publisher: RAIZ, Instituto Investigação de Floresta e Papel
Pub Place: Portugal
Series Title:
Series Editor:
Keywords: Australia/breeding/browsing/browsing damage/brushtail possum/chemical/component/damage/deployment/enhance/environment/establishment/Eucalyptus/Eucalyptus globulus/F1/family/feeding/field/foliage/forestry/genetic/genetic variation/genotype/globulus/herbivore/hybrid/hybrids/inheritance/management/natural/pest/plant/plantation/plantation forestry/plantations/possum/potential/program/provenance/race/resistance/saplings/seedling/seedlings/susceptibility/trial/Trichosurus vulpecula/utilisation/variation
Abstract: Browsing of plantation seedlings and saplings by pest herbivores is a major problem for the successful establishment and management of plantations in Australia. The utilisation of natural plant resistance in deployment or breeding programs may be an option for reducing the amount of damage observed in the plantations. We assessed the variation in the resistance of Eucalyptus globulus races, provenances, and families to browsing by the brushtail possum (Trichosurus vulpecula) in common environment field trials and captive feeding trials. There were significant genetic based differences between provenances of E. globulus in the extent to which they were browsed, and sideroxylonals, a group of defensive plant chemicals, were the most important determinant of foliage intake by possums. Variation in these chemicals explained a large component of the genetic based differences in browsing susceptibility between different provenances within E. globulus. Investigations of resistance of intra- and inter-race F1 hybrids indicated that resistance of E. globulus to possum browsing is additively inherited. These results suggest there is potential to deploy genotypes with greater resistance or enhance resistance through breeding in plantation forestry
Notes: Entered by Marian McGowen (17/05/2005)
Address:
Reprint: In File
Program: SPF Resource Protection
Project: C3
Deliverable: C3-1
Confidentiality: Public
Availability: Authors
Report: Annual Report 2004/5
Type of Work: Poster