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Stability of Outcrossing Rates in Eucalyptus globulus Seedlots


McGowen, MH and Williams, DR and Potts, BM and Vaillancourt, RE, Stability of Outcrossing Rates in Eucalyptus globulus Seedlots, Silvae Genetica, 53, (1) pp. 42-44. ISSN 0037-5349 (2004) [Refereed Article]

DOI: doi:10.1515/sg-2004-0007


Eucalyptus globulus has a mixed mating system and selfing leads to severe inbreeding depression. Thus, outcrossing rate is an important measure of seed quality in this species. Outcrossing rates were estimated on the frequency of a rare recessive chlorophyll deficient mutant in open pollinated seed. Variation of outcrossing rates across different flowering seasons, seed sizes and storage times was assessed in E. globulus seedlots. Although there was a significant difference between the trees studied, outcrossing rates within a tree were found to be stable across four flowering seasons and three seed sizes. Storage either on the tree or in the laboratory did not alter the outcrossing rate in a consistent manner. The stability of outcrossing rates with season of pollination, age and size of seed is noteworthy as these factors may vary widely in multi-tree seedlots used for plantation establishment.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fish pests and diseases
Objective Division:Plant Production and Plant Primary Products
Objective Group:Environmentally sustainable plant production
Objective Field:Environmentally sustainable plant production not elsewhere classified
UTAS Author:McGowen, MH (Dr Marian Wiltshire)
UTAS Author:Williams, DR (Dr Dean Williams)
UTAS Author:Potts, BM (Professor Brad Potts)
UTAS Author:Vaillancourt, RE (Professor Rene Vaillancourt)
ID Code:31267
Year Published:2004
Web of Science® Times Cited:7
Deposited By:Plant Science
Deposited On:2004-08-01
Last Modified:2009-07-31

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