Citation
Lokmal N., . and Mohd Noor A. G., . Variation of specific gravity in Acacia mangium. pp. 69-78. ISSN 2180-1983
Abstract
The study involved 13-year old provenance trials of Acacia mangium which were established at five sites in Sabal Jakar Oya Labang and Sawai in Sarawak Malaysia. Five provenances were planted in the trial. Three provenances were from Australia and two from Indonesia. The main objectives of this study are to establish a radial trend of specific gravity from pith to bark and to establish the extent of variation contributed by planting site provenance tree orientation and radial position on specific gravity. Radial variation in specific gravity increased from pith to bark. It ranged from 0.20 at pith to 0.80 at bark with a mean and coefficient of variation of 0.56 and 17.05 respectively. Site provenance and radial contributed significantly towards specific gravity in Acacia mangium. Interaction between provenance and site was highly significant which involved a change in provenance ranking across the sites. Radial was the largest contributor to the total variance component in specific gravity.
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Abstract
The study involved 13-year old provenance trials of Acacia mangium which were established at five sites in Sabal Jakar Oya Labang and Sawai in Sarawak Malaysia. Five provenances were planted in the trial. Three provenances were from Australia and two from Indonesia. The main objectives of this study are to establish a radial trend of specific gravity from pith to bark and to establish the extent of variation contributed by planting site provenance tree orientation and radial position on specific gravity. Radial variation in specific gravity increased from pith to bark. It ranged from 0.20 at pith to 0.80 at bark with a mean and coefficient of variation of 0.56 and 17.05 respectively. Site provenance and radial contributed significantly towards specific gravity in Acacia mangium. Interaction between provenance and site was highly significant which involved a change in provenance ranking across the sites. Radial was the largest contributor to the total variance component in specific gravity.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Acacia mangium |
| AGROVOC Term: | Fabaceae |
| AGROVOC Term: | Provenance |
| AGROVOC Term: | Provenance trials |
| AGROVOC Term: | Genotype environment interaction |
| AGROVOC Term: | Analysis of variance |
| AGROVOC Term: | Diameter |
| AGROVOC Term: | Growth |
| AGROVOC Term: | Growth rate |
| AGROVOC Term: | Pith |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 28 Apr 2025 06:52 |
| URI: | http://webagris.upm.edu.my/id/eprint/24133 |
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