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Pollen competition does not affect the success of self-pollination in Eucalyptus globulus (Myrtaceae)


Pound, LM and Patterson, B and Wallwork, MAB and Potts, BM and Sedgley, M, Pollen competition does not affect the success of self-pollination in Eucalyptus globulus (Myrtaceae), Australian Journal of Botany, 51, (2) pp. 189-195. ISSN 0067-1924 (2003) [Refereed Article]

DOI: doi:10.1071/BT02082


This study investigated whether pollen competition favours cross- over self-pollination in Eucalyptus globulus Labill. ssp. globulus. Controlled pollinations with self-pollen, cross-pollen and a mixture of self- and cross-pollen were conducted on three partially self-incompatible trees. The paternity of individual seeds resulting from mixed pollination was determined by isozyme analysis. No evidence for pollen competition was found. Instead, seed paternity reflected the level of self-incompatibility of each tree as determined by separate self- and cross-pollinations. Furthermore, the number of seeds set per capsule following mixed pollination was significantly less than that following cross-pollination in the two least self-compatible trees. These results suggest that both self- and cross-pollen tubes reach ovules following mixed pollination and that a late-acting self-incompatibility mechanism operates to abort a certain proportion of self-penetrated ovules.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Forestry sciences
Research Field:Tree improvement (incl. selection and breeding)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Hardwood plantations
UTAS Author:Patterson, B (Dr Briony Patterson)
UTAS Author:Potts, BM (Professor Brad Potts)
ID Code:27857
Year Published:2003
Web of Science® Times Cited:15
Deposited By:Plant Science
Deposited On:2003-08-01
Last Modified:2004-06-21

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