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Achievements in forest tree genetic improvement in Australia and New Zealand 2: Development of Corymbia species and hybrids for plantations in eastern Australia

Lee, D.J. (2007) Achievements in forest tree genetic improvement in Australia and New Zealand 2: Development of Corymbia species and hybrids for plantations in eastern Australia. Australian Forestry, 70 (1). pp. 11-16.

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Publisher URL: http://www.forestry.org.au/

Abstract

This paper describes the establishment of provenance seedling seed orchards of three spotted gums and cadaga (all species of Corymbia ex Eucalyptus). It also discusses the limitations of growing the spotted gums as pure species including: lack of mass flowering, susceptibility to a fungal shoot blight and low amenability to vegetative propagation. These limitations, together with observation of putative natural hybrids of the spotted gums with cadaga, and the early promise of manipulated hybrids, led to an intensive breeding and testing program. Many hybrid families have significant advantages in growth and tolerance to disease, insects and frost, and can be vegetatively propagated. They also exhibit broad environmental plasticity, allowing the best varieties to be planted across a wider range of sites than the spotted gums, resulting in more land being suitable for plantation development.

Item Type:Article
Corporate Creators:Horticulture and Forestry Science
Additional Information:© Institute of Foresters of Australia.
Keywords:Corymbia citriodora; Corymbia henryi; Corymbia torelliana; Corymbia variegate; Eucalypts; hybrids; plantations; progeny; Quambalaria piterika; Ramularia; tree breeding.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Forestry > Sylviculture
Plant culture > Seeds. Seed technology
Deposited On:25 Feb 2009 04:45
Last Modified:29 Sep 2010 01:14

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