Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)

Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)

Elevated atmospheric CO2 is widely reported to stimulate the plant growth and affect plant physiological processes. However, studies on the respond of tropical plant species to elevated CO2 are quite limited and remain largely unknown. The objective of this study was to investigate the effects of el...

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Main Authors: Nor Lailatul Wahidah M., Wan Juliana Wan Ahmad, Nizam M.S., Che Radziah Che Mohd. Zain.
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11367/
http://journalarticle.ukm.my/11367/
http://journalarticle.ukm.my/11367/1/10%20Nor%20Lailatul%20Wahidah.pdf
id ukm-11367
recordtype eprints
spelling ukm-113672018-02-15T05:05:16Z http://journalarticle.ukm.my/11367/ Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya) Nor Lailatul Wahidah M., Wan Juliana Wan Ahmad, Nizam M.S., Che Radziah Che Mohd. Zain., Elevated atmospheric CO2 is widely reported to stimulate the plant growth and affect plant physiological processes. However, studies on the respond of tropical plant species to elevated CO2 are quite limited and remain largely unknown. The objective of this study was to investigate the effects of elevated atmospheric CO2 treatments on the photosynthetic characteristics, growth and biomass in Shorea platycarpa. Saplings of S. platycarpa were grown for seven months in the open roof gas chamber supplied with elevated CO2 (800±50 μmol mol-1) and in the shade house with ambient CO2 (400±50 μmol mol-1). Measurements of S. platycarpa growth and photosynthetic characteristics were made at frequent intervals. Biomass characteristics were determined using destructive methods after seven months of treatment and nondestructive method was used for leaf area index (LAI) determination. Photosynthetic rate (A) of S. platycarpa was not significantly affected by elevated CO2. Increased water use efficiency (WUE) of S. platycarpa grown in elevated CO2 was due to the reduced stomatal conductance (gs) and transpiration rate (E). The CO2 elevation had no significant effect on the S. platycarpa relative growth rates (RGR) and biomass but significantly reduced the leaf area. A weak correlation was found between photosynthetic rate (A) and relative growth rate (RGR). The results clearly showed that photosynthesis, growth rate and biomass of S. platycarpa were not significantly enhanced by elevated CO2. The findings indicated that elevated CO2 did not affect a relatively slow growing and a late successional peat swamp tree species. Penerbit Universiti Kebangsaan Malaysia 2017-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11367/1/10%20Nor%20Lailatul%20Wahidah.pdf Nor Lailatul Wahidah M., and Wan Juliana Wan Ahmad, and Nizam M.S., and Che Radziah Che Mohd. Zain., (2017) Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya). Sains Malaysiana, 46 (9). pp. 1421-1428. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num9_2017/contentsVol46num9_2017.html
repository_type Digital Repository
institution_category Local University
institution Universiti Kebangasaan Malaysia
building UKM Institutional Repository
collection Online Access
language English
description Elevated atmospheric CO2 is widely reported to stimulate the plant growth and affect plant physiological processes. However, studies on the respond of tropical plant species to elevated CO2 are quite limited and remain largely unknown. The objective of this study was to investigate the effects of elevated atmospheric CO2 treatments on the photosynthetic characteristics, growth and biomass in Shorea platycarpa. Saplings of S. platycarpa were grown for seven months in the open roof gas chamber supplied with elevated CO2 (800±50 μmol mol-1) and in the shade house with ambient CO2 (400±50 μmol mol-1). Measurements of S. platycarpa growth and photosynthetic characteristics were made at frequent intervals. Biomass characteristics were determined using destructive methods after seven months of treatment and nondestructive method was used for leaf area index (LAI) determination. Photosynthetic rate (A) of S. platycarpa was not significantly affected by elevated CO2. Increased water use efficiency (WUE) of S. platycarpa grown in elevated CO2 was due to the reduced stomatal conductance (gs) and transpiration rate (E). The CO2 elevation had no significant effect on the S. platycarpa relative growth rates (RGR) and biomass but significantly reduced the leaf area. A weak correlation was found between photosynthetic rate (A) and relative growth rate (RGR). The results clearly showed that photosynthesis, growth rate and biomass of S. platycarpa were not significantly enhanced by elevated CO2. The findings indicated that elevated CO2 did not affect a relatively slow growing and a late successional peat swamp tree species.
format Article
author Nor Lailatul Wahidah M.,
Wan Juliana Wan Ahmad,
Nizam M.S.,
Che Radziah Che Mohd. Zain.,
spellingShingle Nor Lailatul Wahidah M.,
Wan Juliana Wan Ahmad,
Nizam M.S.,
Che Radziah Che Mohd. Zain.,
Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
author_facet Nor Lailatul Wahidah M.,
Wan Juliana Wan Ahmad,
Nizam M.S.,
Che Radziah Che Mohd. Zain.,
author_sort Nor Lailatul Wahidah M.,
title Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
title_short Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
title_full Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
title_fullStr Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
title_full_unstemmed Effects of elevated atmospheric CO2 on photosynthesis, growth and biomass in Shorea platycarpa F. Heim (Meranti Paya)
title_sort effects of elevated atmospheric co2 on photosynthesis, growth and biomass in shorea platycarpa f. heim (meranti paya)
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11367/
http://journalarticle.ukm.my/11367/
http://journalarticle.ukm.my/11367/1/10%20Nor%20Lailatul%20Wahidah.pdf
first_indexed 2023-09-18T20:00:06Z
last_indexed 2023-09-18T20:00:06Z
_version_ 1777406790964609024

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