Journal article
Dry matter production and allocation in Eucalyptus cloeziana and Eucalyptus argophloia seedlings in response to soil water deficits
New Forests, Vol.26(2), pp.187-200
2003
Abstract
Effects of soil water availability on seedling growth, dry matter production and allocation were determined for Gympie (humid coastal) and Hungry Hills (dry inland) provenances of Eucalyptus cloeziana F. Muell. and for E. argophloia Blakely (dry inland) species. Seven-month-old seedlings were subjected to well-watered (100% field capacity, FC), moderate (70% FC) and severe (50% FC) soil water regimes in a glasshouse environment for 14 wk. There were significant differences in seedling growth, biomass production and allocation patterns between species. E. argophloia produced twice as much biomass at 100% FC, and more than three times as much at 70% and 50% FC than did either E. cloeziana provenance. Although the humid provenance of E. cloeziana had a greater leaf area at 100% FC conditions than did the dry provenance, total biomass production did not differ significantly. Both E. cloeziana provenances were highly sensitive to water deficits. E. argophloia allocated 10% more biomass to roots than did E. cloeziana. Allometric analyses indicated that relative biomass allocation patterns were significantly affected by genotype but not by soil water availability. These results have implications for taxon selection for cultivation in humid and subhumid regions.
Details
- Title
- Dry matter production and allocation in Eucalyptus cloeziana and Eucalyptus argophloia seedlings in response to soil water deficits
- Authors
- M Ngugi (Author) - University of QueenslandMark A Hunt (Author) - Queensland Forestry Research InstituteD Doley (Author) - University of QueenslandP Ryan (Author) - Queensland Forestry Research InstituteP Dart (Author) - University of Queensland
- Publication details
- New Forests, Vol.26(2), pp.187-200
- Publisher
- Springer Netherlands
- Date published
- 2003
- DOI
- 10.1023/A:1024493917483
- ISSN
- 0169-4286
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99449850602621
- Output Type
- Journal article
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