Impact of ambient air pollution on locally grown gice cultivars (Oryza sativa L.) in Malaysia

Ishii, S. and Marshall, Fiona M. and Bell, John N. and Abdullah, Ahmad Makmom (2004) Impact of ambient air pollution on locally grown gice cultivars (Oryza sativa L.) in Malaysia. Water, Air, & Soil Pollution, 154 (1-4). pp. 187-201. ISSN 0049-6979

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1023/B:WATE.0000022964.55434....

Abstract

This study presents the first experimental evidence of the sensitivity of rice plants to ambient air pollution from the Southeast Asian tropical region. Two widely adopted local cultivars of rice (Oryza sativa L.), MR84 and MR185, were grown in open top chambers ventilated with charcoal-filtered air and non filtered air, and in adjacent open plots on the campus of University Putra Malaysia. This is located on the south side of the Klang Valley, a rapidly developing area embracing Kuala Lumpur and other satellite cities, but where agriculture remains important The experimental period was from October 2000 to January 2001, corresponding to the main rice growing season in peninsular Malaysia. Adverse impacts on rice growth and yield were observed and were attributed to phytotoxic levels of ambient ozone. There was a clear difference in the sensitivity of the two selected cultivars. A yield reduction of 6.3% was observed for cultivar MR185 (p < 0.01) which was largely due to an increase in grain sterility, whilst the yield reduction for cultivar MR84 was not statistically significant. The reasons for these differing responses are discussed, and a comparison of the present findings with crop responses to ozone found under European conditions suggests a higher sensitivity in our study crops. With increasing industrialisation and urbanisation, this study highlights the need for further examination of the sensitivity of a wider range of crops and cultivars to ambient air pollution in this region, and also points to the potential for appropriate cultivar selection to ameliorate impacts.

Item Type:Article
Keyword:ambient air pollution; Klang Valley; Malaysia; open-top chamber; Oryza sativa L.; ozone; South Asian countries
Subject:Rice - Malaysia
Subject:Air - Pollution
Subject:Growth (Plants)
Faculty or Institute:Faculty of Environmental Studies
DOI Number:10.1023/B:WATE.0000022964.55434.05
ID Code:17947
Deposited By: Muizzudin Kaspol
Deposited On:08 Aug 2011 05:33
Last Modified:08 Aug 2011 05:33

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 08 Aug 2011 05:33.

View statistics for "Impact of ambient air pollution on locally grown gice cultivars (Oryza sativa L.) in Malaysia"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.