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Leaf surface characteristics of selected Malaysian weed species of oil palm

Laboratory and glasshouse studies were conducted to examine the leaf surface characteristics of selected weed species of oil palm. The broadleaf weeds selected were Asystasia gangetica,Borreria latifolia, Cleome rutidosperma, Clidemia hirta, Diodia ocimifolia and Mikania mic...

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Main Authors: Norhayati, Ngah, Dzolkhifli, Omar, Abdul Shukor, Juraimi, Hailmi, M. S
Format: Article
Language:English
Published: 2011
Subjects:
S Agriculture (General)
Online Access:http://eprints.unisza.edu.my/2069/1/FH02-FBIM-17-10920.pdf
http://eprints.unisza.edu.my/2069/
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spelling my-unisza-ir.20692021-08-15T02:33:01Z http://eprints.unisza.edu.my/2069/ Leaf surface characteristics of selected Malaysian weed species of oil palm Norhayati, Ngah Dzolkhifli, Omar Abdul Shukor, Juraimi Hailmi, M. S S Agriculture (General) Laboratory and glasshouse studies were conducted to examine the leaf surface characteristics of selected weed species of oil palm. The broadleaf weeds selected were Asystasia gangetica,Borreria latifolia, Cleome rutidosperma, Clidemia hirta, Diodia ocimifolia and Mikania micrantha, while for the narrow leafs, Axonopus compressus, Cyperus kylingia, Eleusine indica, Paspalum conjugatum and Pennisetum polistachyon were investigated. The weeds were categorized into different types of roughness based on the macroscopic roughness, microscopic roughness and the estimation of three roughness parameters: Ra (arithmetic average height parameter), Rq (root-mean-square roughness parameter, corresponding to Ra), and Rz (average of high peaks and low valleys over the evaluation length). The leaf was examined using scanning electron microscopy (SEM) for the surface roughness, while the epicuticular wax content of the leaf was extracted using chloroform. The amount of wax extracted from the weeds varied between species. For broadleaf plants, Mikania micrantha (44.22 μg/cm2) was identified as the plant that contained the highest quantity of wax. Clidemia hirta (24.03 μg/cm2) and Asystasia gangetica (23.03 μg/cm2)were grouped in the plants with a medium quantity of wax while Cleome rutidosperma (16.52 μg/cm2), Borreria latifolia (14.19 μg/cm2) and Diodia ocimifolia (10.75 μg/cm2) were grouped in the plants with a low quantity of cuticular wax weight. For narrow leaf plants, Eleusine indica (44.23 μg/cm2) and Imperata cylindrica (49.88 μg/cm2) were recognized as the plants that contained a high quantity of wax. Pennisetum polystachion (32.16 μg/cm2) and Cyperus kylingia (22.85 μg/cm2) were categorized under the plants with a medium quantity of wax, whereas Paspalum conjugatum (19.59 μg/cm2) and Axonopus compressus (16.78 μg/cm2) were classified under the plant witha low quantity of wax. The wax on the abaxial surface data of the broadleaf weeds was found to be significantly different when compared to the adaxial surface data. In contrast, the amount of wax on the abaxial and adaxial leaf surface of the narrow leaf weeds was more or less similar. For the leaf surface roughness of the broadleaf species, Borreria latifolia was categorized as the roughest, followed by Clidemia hirta, Diodia ocimifolia, Asystasia gangetica and Cleome rutidosperma. Mikania micrantha had the smoothest leaf surface among the broadleaf species. On the other hand, the narrow leaf of Pennisetum polistachyon was identified as the roughest, followed by Imperata cylindrica and Paspalum conjugatum, while Eleusine indica, Axonopus compressus and Cyperus kylingia were categorized as having the smoothest leafsurface. 2011-01 Article NonPeerReviewed text en http://eprints.unisza.edu.my/2069/1/FH02-FBIM-17-10920.pdf Norhayati, Ngah and Dzolkhifli, Omar and Abdul Shukor, Juraimi and Hailmi, M. S (2011) Leaf surface characteristics of selected Malaysian weed species of oil palm. Journal of agrobiotechnology, 2 (1). pp. 53-65. ISSN 1985-5133
institution Universiti Sultan Zainal Abidin
building UNISZA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sultan Zainal Abidin
content_source UNISZA Institutional Repository
url_provider https://eprints.unisza.edu.my/
language English
topic S Agriculture (General)
spellingShingle S Agriculture (General)
Norhayati, Ngah
Dzolkhifli, Omar
Abdul Shukor, Juraimi
Hailmi, M. S
Leaf surface characteristics of selected Malaysian weed species of oil palm
description Laboratory and glasshouse studies were conducted to examine the leaf surface characteristics of selected weed species of oil palm. The broadleaf weeds selected were Asystasia gangetica,Borreria latifolia, Cleome rutidosperma, Clidemia hirta, Diodia ocimifolia and Mikania micrantha, while for the narrow leafs, Axonopus compressus, Cyperus kylingia, Eleusine indica, Paspalum conjugatum and Pennisetum polistachyon were investigated. The weeds were categorized into different types of roughness based on the macroscopic roughness, microscopic roughness and the estimation of three roughness parameters: Ra (arithmetic average height parameter), Rq (root-mean-square roughness parameter, corresponding to Ra), and Rz (average of high peaks and low valleys over the evaluation length). The leaf was examined using scanning electron microscopy (SEM) for the surface roughness, while the epicuticular wax content of the leaf was extracted using chloroform. The amount of wax extracted from the weeds varied between species. For broadleaf plants, Mikania micrantha (44.22 μg/cm2) was identified as the plant that contained the highest quantity of wax. Clidemia hirta (24.03 μg/cm2) and Asystasia gangetica (23.03 μg/cm2)were grouped in the plants with a medium quantity of wax while Cleome rutidosperma (16.52 μg/cm2), Borreria latifolia (14.19 μg/cm2) and Diodia ocimifolia (10.75 μg/cm2) were grouped in the plants with a low quantity of cuticular wax weight. For narrow leaf plants, Eleusine indica (44.23 μg/cm2) and Imperata cylindrica (49.88 μg/cm2) were recognized as the plants that contained a high quantity of wax. Pennisetum polystachion (32.16 μg/cm2) and Cyperus kylingia (22.85 μg/cm2) were categorized under the plants with a medium quantity of wax, whereas Paspalum conjugatum (19.59 μg/cm2) and Axonopus compressus (16.78 μg/cm2) were classified under the plant witha low quantity of wax. The wax on the abaxial surface data of the broadleaf weeds was found to be significantly different when compared to the adaxial surface data. In contrast, the amount of wax on the abaxial and adaxial leaf surface of the narrow leaf weeds was more or less similar. For the leaf surface roughness of the broadleaf species, Borreria latifolia was categorized as the roughest, followed by Clidemia hirta, Diodia ocimifolia, Asystasia gangetica and Cleome rutidosperma. Mikania micrantha had the smoothest leaf surface among the broadleaf species. On the other hand, the narrow leaf of Pennisetum polistachyon was identified as the roughest, followed by Imperata cylindrica and Paspalum conjugatum, while Eleusine indica, Axonopus compressus and Cyperus kylingia were categorized as having the smoothest leafsurface.
format Article
author Norhayati, Ngah
Dzolkhifli, Omar
Abdul Shukor, Juraimi
Hailmi, M. S
author_facet Norhayati, Ngah
Dzolkhifli, Omar
Abdul Shukor, Juraimi
Hailmi, M. S
author_sort Norhayati, Ngah
title Leaf surface characteristics of selected Malaysian weed species of oil palm
title_short Leaf surface characteristics of selected Malaysian weed species of oil palm
title_full Leaf surface characteristics of selected Malaysian weed species of oil palm
title_fullStr Leaf surface characteristics of selected Malaysian weed species of oil palm
title_full_unstemmed Leaf surface characteristics of selected Malaysian weed species of oil palm
title_sort leaf surface characteristics of selected malaysian weed species of oil palm
publishDate 2011
url http://eprints.unisza.edu.my/2069/1/FH02-FBIM-17-10920.pdf
http://eprints.unisza.edu.my/2069/
_version_ 1709673138063671296
score 13.211869

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