Journal article
Screening Eucalyptus cloeziana and E. argophloia populations for resistance to Puccinia psidii
Plant Disease, Vol.99(1), pp.71-79
2015
Abstract
Disease screening to determine the threat Puccinia psidii poses to plantation and native eucalypts in Australia was undertaken in half-sib families of two contrasting eucalypt species, Eucalyptus cloeziana (a widely distributed species) and E. argophloia (a species with a limited distribution). Artificial inoculation with a single lesion isolate of P. psidii was used to screen these species for resistance to the biotype of P. psidii established in Australia. The objective was to characterise resistance to P. psidii within these two distinct species: Eucalyptus argophloia, a vulnerable species with a narrow distribution and E. cloeziana a species with a broad and extensive distribution in Queensland. Results for E. cloeziana indicate that inland provenances are more resistant to P. psidii infection than provenances from coastal regions. Heritability estimates (h2) for the two assessment systems used (resistance on a 1-5 ordinal scale verses resistance on a 0-1 binomial scale) were low to high (0.24 to 0.63) for E. argophloia and moderate to high (0.4 to 0.91) for E. cloeziana indicating a significant level of additive genetic variance for rust resistance within the populations. This study demonstrates the potential to select resistant families within the tested populations and indicates that P. psidii could detrimentally impact these species in native forests, nurseries and plantations.
Details
- Title
- Screening Eucalyptus cloeziana and E. argophloia populations for resistance to Puccinia psidii
- Authors
- David J Lee (Author) - University of the Sunshine Coast - Faculty of Arts and BusinessJeremy T Brawner (Author) - University of the Sunshine Coast - Faculty of Arts and BusinessGeoff S Pegg (Author) - University of the Sunshine Coast - Faculty of Arts and Business
- Publication details
- Plant Disease, Vol.99(1), pp.71-79
- Publisher
- American Phytopathological Society
- Date published
- 2015
- DOI
- 10.1094/PDIS-04-14-0353-RE
- ISSN
- 0191-2917
- Organisation Unit
- Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99448855202621
- Output Type
- Journal article
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