Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes

Acacia mangium Willd. and A cacia auriculifotmis A. Cunn. ex. Benth. are two of the four fast-growing tropical acacias which have received the highest priority for genetic assessment and improvement. Even though A. mangium was proposed for timber production in a short rotation but experience has...

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Main Author: Eldoma, Ahmed Mohamed Adam
Format: Thesis
Language:English
English
Published: 2003
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Online Access:http://psasir.upm.edu.my/id/eprint/10164/1/FH_2003_21.pdf
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spelling my-upm-ir.101642024-03-18T07:15:11Z Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes 2003-01 Eldoma, Ahmed Mohamed Adam Acacia mangium Willd. and A cacia auriculifotmis A. Cunn. ex. Benth. are two of the four fast-growing tropical acacias which have received the highest priority for genetic assessment and improvement. Even though A. mangium was proposed for timber production in a short rotation but experience has shown that it is impeded by its susceptibility to heart rot, the multiple leaders (ML) formation, and the tendency of growth to break off just short of the target of the desired size for sawn timber production. However, the present work investigated the ML formation, its causes and variation and concurrently assessed growth performance and examined the patterns of shoot growth and some physiological traits of eight selected A. mangium and A. auriculiformis genotypes through establishment of a field trial and three related glasshouse experiments. The field trial was a randomized complete block design with four replications utilizing eight genotypes four each of the two species at two sites (burnt and unburned). Results at 23 months showed significant differences (P<0.001) between sites for the number of ML trees/plot, basal diameter, and survival but not for height and between genotypes for ML trees/plot, basal diameter (P<0.001), height (P<0.01) and survival (P<0.05). The site x genotype interaction was significant (P< 0.001) only for ML trees/plot. Mangium - Growth - Case studies Earleaf acacia - Growth - Case studies 2003-01 Thesis http://psasir.upm.edu.my/id/eprint/10164/ http://psasir.upm.edu.my/id/eprint/10164/1/FH_2003_21.pdf text en public doctoral Universiti Putra Malaysia Mangium - Growth - Case studies Earleaf acacia - Growth - Case studies Faculty of Forestry Abd Shukor, Nor Aini English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
advisor Abd Shukor, Nor Aini
topic Mangium - Growth - Case studies
Earleaf acacia - Growth - Case studies

spellingShingle Mangium - Growth - Case studies
Earleaf acacia - Growth - Case studies

Eldoma, Ahmed Mohamed Adam
Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
description Acacia mangium Willd. and A cacia auriculifotmis A. Cunn. ex. Benth. are two of the four fast-growing tropical acacias which have received the highest priority for genetic assessment and improvement. Even though A. mangium was proposed for timber production in a short rotation but experience has shown that it is impeded by its susceptibility to heart rot, the multiple leaders (ML) formation, and the tendency of growth to break off just short of the target of the desired size for sawn timber production. However, the present work investigated the ML formation, its causes and variation and concurrently assessed growth performance and examined the patterns of shoot growth and some physiological traits of eight selected A. mangium and A. auriculiformis genotypes through establishment of a field trial and three related glasshouse experiments. The field trial was a randomized complete block design with four replications utilizing eight genotypes four each of the two species at two sites (burnt and unburned). Results at 23 months showed significant differences (P<0.001) between sites for the number of ML trees/plot, basal diameter, and survival but not for height and between genotypes for ML trees/plot, basal diameter (P<0.001), height (P<0.01) and survival (P<0.05). The site x genotype interaction was significant (P< 0.001) only for ML trees/plot.
format Thesis
qualification_level Doctorate
author Eldoma, Ahmed Mohamed Adam
author_facet Eldoma, Ahmed Mohamed Adam
author_sort Eldoma, Ahmed Mohamed Adam
title Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
title_short Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
title_full Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
title_fullStr Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
title_full_unstemmed Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes
title_sort growth habit and performance of acacia mangium and acacia auriculiformis genotypes
granting_institution Universiti Putra Malaysia
granting_department Faculty of Forestry
publishDate 2003
url http://psasir.upm.edu.my/id/eprint/10164/1/FH_2003_21.pdf
_version_ 1794018886406897664