Library Open Repository

Mycosphaerella leaf disease: genetic variation in damage to Eucalyptus nitens, Eucalyptus globulus, and their F1 hybrid

Downloads

Downloads per month over past year

Dungey, HS and Potts, BM and Carnegie, AJ and Ades, PK (1997) Mycosphaerella leaf disease: genetic variation in damage to Eucalyptus nitens, Eucalyptus globulus, and their F1 hybrid. Canadian Journal of Forest Research, 27 (5). pp. 750-759. ISSN 0045-5067

[img]
Preview
PDF
Dungey__et__al__Can__J__For__Res__1997b.pdf | Download (827kB)
Available under University of Tasmania Standard License.

Abstract

Severity of Mycosphaere/la leaf disease was assessed on the adult and juvenile foliage ofboth controlled crossed and open-pollinated families ofEucalyptus globulus ssp. globulus Labill., Eucalyptus nitens (Deane & Maiden) Maiden, Eucalyptus globulus ssp. bicostata (Maiden, Blakely & 1. Simm.) Kirkpatr., and their F1 hybrids in a trial in northwest Tasmania, Australia. Within ssp_ globulus, disease was more severe on one provenance, Taranna, than another, King Island. For interprovenance hybrids, differences between parents were inherited in an additive manner, whereas interspecific hybrids were generally more susceptible than predicted intraspecific midparent values and occasionally, were more susceptible than the more susceptible parent. Within populations, the narrow-sense heritabilities for Mycosphaerella disease severity were low to moderate (0.004-0.506), but were consistently higher for adult than for juvenile foliage despite disease severity being higher on juvenile foliage. Parental breeding values and heritabilities estimated from open-pollinated progeny were similar to estimates obtained from controlled crosses involving the same parents. Complex genetic interactions were detected between growth, vegetative phase change, and disease severity. It is possible that selection for rapid growth in an environment without disease may result in indirect selection for susceptibility.

Item Type: Article
Journal or Publication Title: Canadian Journal of Forest Research
Page Range: pp. 750-759
ISSN: 0045-5067
Identification Number - DOI: 10.1139/cjfr-27-5-750
Additional Information: BM Potts. Copyright 2002. National Research Council. Please refer to the journal link for access to the definitive, published version. Under the Canadian Copyright Act, individuals may download or print single copies of articles for personal research or study. Any person may reproduce short excerpts from articles in the journals for any purpose that respects the moral rights of authors, provided that the source is fully acknowledged. As a courtesy, the consent of authors of such material should be obtained directly from the author.
Date Deposited: 29 Feb 2008 02:58
Last Modified: 18 Nov 2014 03:30
URI: http://eprints.utas.edu.au/id/eprint/3366
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page