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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| Format: | Article |
| Language: | English |
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Universiti Kebangsaan Malaysia
2015
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| Online Access: | http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/1/01_M.R._Ahmad_Nazarudin.pdf |
| _version_ | 1848811848848113664 |
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| author | Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y. |
| author_facet | Ahmad Nazarudin, M.R. Tsan, F.Y. Normaniza, O. Adzmi, Y. |
| author_sort | Ahmad Nazarudin, M.R. |
| building | UKM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T23:52:56Z |
| format | Article |
| id | oai:generic.eprints.org:8624 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T23:52:56Z |
| publishDate | 2015 |
| publisher | Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org: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 |
| 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 |
| title | 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_short | 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 |
| url | http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/ http://journalarticle.ukm.my/8624/1/01_M.R._Ahmad_Nazarudin.pdf |