Journal article
Reproductive phenology, floral biology and breeding system of aquiliaria crassna in tropical Australia
Journal of Tropical Forest Science, Vol.31(2), pp.211-221
2019
Abstract
Trees of the Aquilaria genus produce a fragrant resin and have had a long history of human use. In this study, the flowering and fruiting phenology of Aquilaria crassna is described, as well as the main reproductive system operating in A. crassna, growing in a cultivated environment. Sexual reproduction occurs annually, with a peak in flowering occurring during the dry season. Flowers are hermaphrodite borne on terminal branches. Flower anthesis typically occurred at night and the duration of the flowering and fruiting phases was 12.3 and 59.5 days respectively. Four simplified flower stages were identified: opening (0.2 to 1 day), open (2.3 to 3.6 days), closing (0.8 to 1.3 days) and closed-flower fall (1.4 to 7.4 days) or closed-fruit development (17 to 25 days). Stigma receptivity, determined using an esterase indicator, was recorded throughout the floweropen phase. Two simplified fruiting stages were identified: initiation (4 to 8 days) and maturation (25 to 58 days). Open pollinated flowers had a moderate to high fecundity with 14.5 to 46.7% of flowers setting seed. The A. crassna species demonstrated a mixed mating system that is primarily outcrossing. Hybridisation between A. baillonii (♂) and A. crassna (♀) was demonstrated.
Details
- Title
- Reproductive phenology, floral biology and breeding system of aquiliaria crassna in tropical Australia
- Authors
- A Lopez-Sampson (Author) - James Cook UniversityTony Page (Author) - University of the Sunshine Coast
- Publication details
- Journal of Tropical Forest Science, Vol.31(2), pp.211-221
- Publisher
- Forest Research Institute Malaysia
- Date published
- 2019
- DOI
- 10.26525/jtfs2019.31.2.211221
- ISSN
- 0128-1283
- Organisation Unit
- Australian Centre for Pacific Islands Research; Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute; Sustainability Research Cluster
- Language
- English
- Record Identifier
- 99451334602621
- Output Type
- Journal article
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