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Effect of shadecloth tree shelters on cold-induced photoinhibition, foliar anthocyanin and growth of Eucalyptus globulus and E. nitens seedlings during establishment

Citation

Close, DC and Beadle, CL and Holz, GK and Brown, PH, Effect of shadecloth tree shelters on cold-induced photoinhibition, foliar anthocyanin and growth of Eucalyptus globulus and E. nitens seedlings during establishment, Australian Journal of Botany, 50, (1) pp. 15-20. ISSN 0067-1924 (2002) [Refereed Article]

DOI: doi:10.1071/BT01038

Abstract

The effects of shadecloth tree shelters on cold-induced photoinhibition, foliar anthocyanin and growth of Eucalyptus globulus Labill. and Eucalyptus nitens (Deane & Maiden) Maiden seedlings were assessed between planting (in early spring) and the age of 23 weeks. The experimental site was at 350 m above sea level (asl), which is considered marginal for establishment of E. globulus (but not E. nitens) plantations in Tasmania because of low mean minimum temperatures. Conditions within 3 weeks of planting induced severe photoinhibition in non-shaded seedlings. This was associated with increased anthocyanin and photodamage in non-shaded E. nitens and E. globulus. As a result, there was 20% mortality in non-shaded E. globulus. In contrast, shaded seedlings of both species had levels of photoinhibition and anthocyanin that were largely similar to those before planting and there was no photodamage. Levels of anthocyanin indicated that its synthesis responded to the severity of photoinhibition. Height growth and levels of mortality indicated that cold-induced photoinhibition, and not frost tolerance alone, determines the range of environments where E. globulus can be successfully planted. In contrast, the tolerance of E. nitens seedlings to cold-induced photoinhibition may be a factor in the demonstrated success of this species as a high-altitude plantation species.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Forestry Sciences
Research Field:Tree Nutrition and Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Hardwood Plantations
Author:Close, DC (Associate Professor Dugald Close)
Author:Beadle, CL (Dr Christopher Beadle)
Author:Holz, GK (Dr Greg Holz)
Author:Brown, PH (Professor Phil Brown)
ID Code:24366
Year Published:2002
Web of Science® Times Cited:21
Deposited By:Agricultural Science
Deposited On:2002-08-01
Last Modified:2003-05-28
Downloads:0

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