Affiliation:
1. Cooperative Research Centre for Sustainable Production Forestry and School of Plant Science, University of Tasmania, Private Bag 55, Hobart, Tas 7001, Australia
Abstract
Summary
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.
Reference29 articles.
1. BALLONI, E. A., KAGEYAMA, P. Y. and CORRADINI, L.: Efeito do tamanho da semente de Eucalyptus grandis sobre o vigor das mudas no viverio e no campo. Silvicultura 14, 41-43 (1978)
2. BATTAGLIA, M.: Seed germination physiology of Eucalyptus delegatensis R.T. Baker in Tasmania. Australian Journal of Botany 41, 119-136 (1993)10.1071/BT9930119
3. BODEN, R.W.: Australian studies on Eucalyptus seed 1956-61, with particular reference to germination behaviour. In: ‘Second World Eucalyptus Conference’. Sao Paulo, Brazil pp. 596-603 (1961)
4. BROOKER, M. I. H.: A new classification of the genus Eucalyptus L’Her. (Myrtaceae). Australian Systematic Botany 13, 79-148 (2000)
5. BROWN, A. H. D., BARRETT, S. C. H. and MORAN, G. F.: Mating system estimation in forest trees: models, methods and meanings. In: ‘Population Genetics in Forestry’. (Ed. H. R. GREGORIUS) pp. 32-49 (Springer-Verlag: New York) (1985)10.1007/978-3-642-48125-3_3
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