- Title
- Morphological and physiological adaptations to waterlogging by Eucalyptus seedlings from the semi-arid Pilbara, Western Australia
- Creator
- Florentine, Singarayer; Fox, John
- Date
- 2002
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/58000
- Identifier
- vital:295
- Identifier
- ISSN:0035-922X
- Abstract
- This study was undertaken to investigate the adaptation to long term waterlogging of semi-arid eucalyptus species. Long-term waterlogging of Eucalyptus victrix seedlings significantly increases seedling stem diameter. Flooding reduces photosynthesis, transpiration and stomatal conductance. Flooding does not increase shoot fresh or dry weight of 4-, 8- or 17- week old seedlings. Leaf emergence may be stimulated for flooded seedlings compared with unflooded seedlings. Root dry weight is not significantly greater for 17- week old flooded plants than 13- week old seedlings. We suggest that maintenance of a high root/shoot ratio is a drought adaptation. Furthermore, a comparative study of flood tolerance in semi-arid eucalypt species suggests that those species intolerant of flooding seldom express morphological adaptations and fail to recover from physiological damage. Flooding significantly reduced the transpiration rate and stomatal conduct of all three species. Diurnal transpiration, stomatal conductance and leaf water potential of E. terminalis and E. leucophloia were significantly different between treatment (flooding) and control seedlings.; C1
- Publisher
- Western Australia Royal Society of Western Australia
- Relation
- The Journal of the Royal Society of Western Australia Vol. 85, no. (2002), p. 61-70
- Rights
- Copyright Royal Society of Western Australia
- Rights
- Open Access
- Rights
- This metadata is freely available under a CCO license
- Subject
- 06 Biological Sciences; Eucalyptus; Flooding; Floodplain; Semi-arid; E. victrix; E. terminalis; E. leucophloia
- Full Text
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