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
Subjects:	Mangium - Growth - Case studies Earleaf acacia - Growth - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/10164/1/FH_2003_21.pdf
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id	my-upm-ir.10164
record_format	uketd_dc
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

Growth Habit and Performance of Acacia Mangium and Acacia Auriculiformis Genotypes

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