Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol

Syzygium myrtifolium (Roxb.) Walp. is a popular landscape plant in Malaysia. This species is always planted as hedge plant and topiary. However, it requires frequent trimming to maintain its form and aesthetic functions as it grows vigorously. Conventional trimming technique by using trimming shear...

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Main Authors:	Ahmad Nazarudin Mohd Roseli, Tsan, Fui Ying, Mohd Fauzi Ramlan
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2012
Online Access:	http://journalarticle.ukm.my/5522/ http://journalarticle.ukm.my/5522/ http://journalarticle.ukm.my/5522/1/02%2520Ahmad%2520Nazarudin.pdf

id	ukm-5522
recordtype	eprints
spelling	ukm-55222016-12-14T06:38:42Z http://journalarticle.ukm.my/5522/ Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol Ahmad Nazarudin Mohd Roseli, Tsan, Fui Ying Mohd Fauzi Ramlan, Syzygium myrtifolium (Roxb.) Walp. is a popular landscape plant in Malaysia. This species is always planted as hedge plant and topiary. However, it requires frequent trimming to maintain its form and aesthetic functions as it grows vigorously. Conventional trimming technique by using trimming shear or trimming machine is currently practiced in landscape maintenance which is time consuming, labour intensive and costly. Therefore, a study was conducted to investigate the effects of a plant growth retardant, paclobutrazol, on the growth and physiological response of S. myrtifolium. The plants were planted in polyethylene bags sized 33 cm in height × 27 cm in diameter and filled with soil, organic matter and sand (3:2:1). Paclobutrazol at rates of 0, 1.25, 2.50 and 3.75 g L-1 were soil drenched at 30 days after the plants were trimmed and new shoots were produced. Paclobutrazol significantly reduced plant height and leaf area but increased the leaf area index. Reduced photosynthetic rates were recorded with the treated plants as compared to the control plants. In addition, paclobutrazol at 3.75 g L-1 significantly reduced the transpiration rate as compared with the control plants and plants treated with 1.25 g L-1 of paclobutrazol. However, stomatal conductance was not affected significantly by paclobutrazol. The growth inhibition effect of paclobutrazol reduced the trimming activity in S. myrtifolium. Chlorophyll fluorescence measurement indicated that physiological processes in the paclobutrazol-treated plants were not affected. Paclobutrazol is concluded to offer a better approach in maintaining the growth of S. myrtifolium. Universiti Kebangsaan Malaysia 2012-10 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/5522/1/02%2520Ahmad%2520Nazarudin.pdf Ahmad Nazarudin Mohd Roseli, and Tsan, Fui Ying and Mohd Fauzi Ramlan, (2012) Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol. Sains Malaysiana, 41 (10). pp. 1187-1192. ISSN 0126-6039 http://www.ukm.my/jsm/contents.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Syzygium myrtifolium (Roxb.) Walp. is a popular landscape plant in Malaysia. This species is always planted as hedge plant and topiary. However, it requires frequent trimming to maintain its form and aesthetic functions as it grows vigorously. Conventional trimming technique by using trimming shear or trimming machine is currently practiced in landscape maintenance which is time consuming, labour intensive and costly. Therefore, a study was conducted to investigate the effects of a plant growth retardant, paclobutrazol, on the growth and physiological response of S. myrtifolium. The plants were planted in polyethylene bags sized 33 cm in height × 27 cm in diameter and filled with soil, organic matter and sand (3:2:1). Paclobutrazol at rates of 0, 1.25, 2.50 and 3.75 g L-1 were soil drenched at 30 days after the plants were trimmed and new shoots were produced. Paclobutrazol significantly reduced plant height and leaf area but increased the leaf area index. Reduced photosynthetic rates were recorded with the treated plants as compared to the control plants. In addition, paclobutrazol at 3.75 g L-1 significantly reduced the transpiration rate as compared with the control plants and plants treated with 1.25 g L-1 of paclobutrazol. However, stomatal conductance was not affected significantly by paclobutrazol. The growth inhibition effect of paclobutrazol reduced the trimming activity in S. myrtifolium. Chlorophyll fluorescence measurement indicated that physiological processes in the paclobutrazol-treated plants were not affected. Paclobutrazol is concluded to offer a better approach in maintaining the growth of S. myrtifolium.
format	Article
author	Ahmad Nazarudin Mohd Roseli, Tsan, Fui Ying Mohd Fauzi Ramlan,
spellingShingle	Ahmad Nazarudin Mohd Roseli, Tsan, Fui Ying Mohd Fauzi Ramlan, Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
author_facet	Ahmad Nazarudin Mohd Roseli, Tsan, Fui Ying Mohd Fauzi Ramlan,
author_sort	Ahmad Nazarudin Mohd Roseli,
title	Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
title_short	Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
title_full	Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
title_fullStr	Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
title_full_unstemmed	Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol
title_sort	morphological and physiological response of syzygium myrtifolium (roxb.) walp. to paclobutrazol
publisher	Universiti Kebangsaan Malaysia
publishDate	2012
url	http://journalarticle.ukm.my/5522/ http://journalarticle.ukm.my/5522/ http://journalarticle.ukm.my/5522/1/02%2520Ahmad%2520Nazarudin.pdf
first_indexed	2023-09-18T19:44:22Z
last_indexed	2023-09-18T19:44:22Z
_version_	1777405801611132928

Morphological and physiological response of syzygium myrtifolium (Roxb.) Walp. to paclobutrazol

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