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Eucalypt seed collectors: beware of sampling seedlots from low in the canopy!

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Patterson, B and Vaillancourt, RE and Potts, BM (2001) Eucalypt seed collectors: beware of sampling seedlots from low in the canopy! Australian Forestry, 64 (3). pp. 139-142. ISSN 0004-9158

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Abstract

Molecular markers have provided evidence that the canopy position from which open-pollinated seed is harvested in Eucalyptus globulus can markedly affect its outcrossing rate. Outcrossing rates were higher and more uniform in upper canopy samples. As expected, no significant differences in outcrossing rate were found between top and bottom canopy samples of self-incompatible trees, however, differences were large between top and bottom samples of self-compatible trees. In one tree, 73% of the open pollinated progenies at the bottom of the canopy were selfed compared to 26% at the top. Such selfing can result in severe reduction in survival and growth. This result clearly indicates the importance of sampling position within the canopy when collecting open pollinated seed for deployment or genetic evaluation.

Item Type: Article
Keywords: seed collection seed quality, inbreeding, outcrossing rate, Eucalyptus globulus
Journal or Publication Title: Australian Forestry
Page Range: pp. 139-142
ISSN: 0004-9158
Additional Information: BM Potts. Copyright. The Institute of Foresters of Australia Inc 2001
Date Deposited: 02 Oct 2008 23:13
Last Modified: 18 Nov 2014 03:50
URI: http://eprints.utas.edu.au/id/eprint/7654
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