Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate

A study was conducted to determine the effects of a plant growth regulator (paclobutrazol, PBZ) and commercial fertilizer (Krista-K Plus) as a source of potassium nitrate (KNO3 ) on the growth of Xanthostemon chrysantus. It was also attempted to investigate the anatomical changes in the leaf an...

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Main Authors:	Ahmad Nazarudin, M.R., Tsan, F.Y., Normaniza, O., Adzmi, Y.
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2015
Online Access:	http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/1/01_M.R._Ahmad_Nazarudin.pdf

id	ukm-8624
recordtype	eprints
spelling	ukm-86242016-12-14T06:47:43Z http://journalarticle.ukm.my/8624/ Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y. A study was conducted to determine the effects of a plant growth regulator (paclobutrazol, PBZ) and commercial fertilizer (Krista-K Plus) as a source of potassium nitrate (KNO3 ) on the growth of Xanthostemon chrysantus. It was also attempted to investigate the anatomical changes in the leaf and stem after the treatment. Nine treatments, i.e. control (no PBZ and Krista-K Plus application), 0 PBZ gL-1 + 100 g Krista-K Plus, 0 PBZ gL-1 + 200 g Krista-K Plus, 0.125 PBZ gL-1 + 0 g Krista-K Plus, 0.125 PBZ gL-1 + 100 g Krista-K Plus, 0.125 PBZ gL-1 + 200 g Krista-K Plus, 0.25 PBZ gL-1 + 0 g Krista-K Plus, 0.25 PBZ gL-1 + 100 g Krista-K Plus and 0.25 PBZ gL-1 + 200 g Krista-K Plus, were tested. PBZ was soil drenched at the commencement of the study while Krista-K Plus was applied at three-month intervals. Plant growth performances such as tree height, diameter at breast height, canopy diameter and leaf area were recorded monthly throughout the study period. Stem and leaf samples were collected before the application of treatments and after six months of treatments for anatomical observation by using electron microscope. Plant height, diameter at breast height, crown diameter and leaf area were significantly reduced with the application of PBZ. Palisade parenchyma thickness was increased by 33.83% with 0.25 PBZ gL-1 + 200 g Krista-K Plus, while only 2.44% increment recorded in the control tree. Xylem thickness in the stem was reduced by 21.81% after treated with the highest dosage of PBZ, while the control tree only had 1.78% increment. Spongy parenchyma thickness in the leaf was unaffected. However, palisade parenchyma was found the thickest after combined treatment with 0.25 PBZ gL-1 + 200 g Krista-K Plus. Micrograph images of the cross-section of leaf lamina and stem showed that the cells were tightly arranged in response to the application of PBZ. Universiti Kebangsaan Malaysia 2015-04 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/8624/1/01_M.R._Ahmad_Nazarudin.pdf Ahmad Nazarudin, M.R. and Tsan, F.Y. and Normaniza, O. and Adzmi, Y. (2015) Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate. Sains Malaysiana, 44 (4). pp. 483-489. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid44bil4_2015/KandunganJilid44Bil4_2015.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	A study was conducted to determine the effects of a plant growth regulator (paclobutrazol, PBZ) and commercial fertilizer (Krista-K Plus) as a source of potassium nitrate (KNO3 ) on the growth of Xanthostemon chrysantus. It was also attempted to investigate the anatomical changes in the leaf and stem after the treatment. Nine treatments, i.e. control (no PBZ and Krista-K Plus application), 0 PBZ gL-1 + 100 g Krista-K Plus, 0 PBZ gL-1 + 200 g Krista-K Plus, 0.125 PBZ gL-1 + 0 g Krista-K Plus, 0.125 PBZ gL-1 + 100 g Krista-K Plus, 0.125 PBZ gL-1 + 200 g Krista-K Plus, 0.25 PBZ gL-1 + 0 g Krista-K Plus, 0.25 PBZ gL-1 + 100 g Krista-K Plus and 0.25 PBZ gL-1 + 200 g Krista-K Plus, were tested. PBZ was soil drenched at the commencement of the study while Krista-K Plus was applied at three-month intervals. Plant growth performances such as tree height, diameter at breast height, canopy diameter and leaf area were recorded monthly throughout the study period. Stem and leaf samples were collected before the application of treatments and after six months of treatments for anatomical observation by using electron microscope. Plant height, diameter at breast height, crown diameter and leaf area were significantly reduced with the application of PBZ. Palisade parenchyma thickness was increased by 33.83% with 0.25 PBZ gL-1 + 200 g Krista-K Plus, while only 2.44% increment recorded in the control tree. Xylem thickness in the stem was reduced by 21.81% after treated with the highest dosage of PBZ, while the control tree only had 1.78% increment. Spongy parenchyma thickness in the leaf was unaffected. However, palisade parenchyma was found the thickest after combined treatment with 0.25 PBZ gL-1 + 200 g Krista-K Plus. Micrograph images of the cross-section of leaf lamina and stem showed that the cells were tightly arranged in response to the application of PBZ.
format	Article
author	Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y.
spellingShingle	Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y. Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
author_facet	Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y.
author_sort	Ahmad Nazarudin, M.R.
title	Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
title_short	Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
title_full	Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
title_fullStr	Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
title_full_unstemmed	Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate
title_sort	growth and anatomical responses in xanthostemon chrysanthus as influenced by paclobutrazol and potassium nitrate
publisher	Universiti Kebangsaan Malaysia
publishDate	2015
url	http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/1/01_M.R._Ahmad_Nazarudin.pdf
first_indexed	2023-09-18T19:52:50Z
last_indexed	2023-09-18T19:52:50Z
_version_	1777406333620846592

Growth and anatomical responses in Xanthostemon chrysanthus as influenced by Paclobutrazol and Potassium Nitrate

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