Allelopathic effects of Fimbristylis miliacea on the physiological activities of five Malaysian rice varieties

Mohammed Abu Bakar Siddique, Ismail Sahid

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Fimbristylis miliacea, a sedge having allelopathic potential is a dominant weed in the rice fields. Experiments were carried out in the laboratory and greenhouse to evaluate the allelopathic effects of F. miliacea on the physiological activities of five Malaysian rice varieties namely MR211, MRQ74, MR220, MR84 and MR232. The allelopathic effects of F. miliacea were assessed based on the chlorophyll and melondialdehyde (MDA) content, the activity of antioxidant enzymes namely catalase (CAT) and peroxidase (POD) of the rice seedlings, because physiological activities are hindered by allelopathy. Three concentrations of the aqueous extract of the weed (12.5 gl-1, 25 gl-1 and 50 gl-1) and weed debris (5, 10 and 20 g dry debris / 1000 g soil) were used in the experiments carried out in the laboratory and green house, respectively. Among the rice varieties tested, it was observed that the MDA content of MRQ74 increased with increasing concentrations of the aqueous extract. The chlorophyll content of MRQ74 showed the highest reduction (64.5% of the control) in the presence of F. miliacea debris compared to that of the other four varieties, indicating the susceptibility of the rice variety to weed allelopathy. The results showed that there was an imbalance in the activity of catalase (CAT) and peroxidase (POD) in the rice seedlings due to the allelopathic effect of the weed species. The mitotic index of onion root treated with F. miliacea aqueous extract decreased compared to that of the control. The results clearly showed that F. miliacea has definite allelopathic effects on the rice variety, MRQ74 (compared to the other varieties tested).

Original languageEnglish
Pages (from-to)2062-2067
Number of pages6
JournalAustralian Journal of Crop Science
Volume7
Issue number13
Publication statusPublished - 2013

Fingerprint

Fimbristylis
rice
weeds
allelopathy
catalase
extracts
peroxidase
chlorophyll
seedlings
water
onions
paddies
antioxidant activity
greenhouses
enzymes

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

Allelopathic effects of Fimbristylis miliacea on the physiological activities of five Malaysian rice varieties. / Siddique, Mohammed Abu Bakar; Sahid, Ismail.

In: Australian Journal of Crop Science, Vol. 7, No. 13, 2013, p. 2062-2067.

Research output: Contribution to journalArticle

@article{120211a6934c426083655327a96bd839,
title = "Allelopathic effects of Fimbristylis miliacea on the physiological activities of five Malaysian rice varieties",
abstract = "Fimbristylis miliacea, a sedge having allelopathic potential is a dominant weed in the rice fields. Experiments were carried out in the laboratory and greenhouse to evaluate the allelopathic effects of F. miliacea on the physiological activities of five Malaysian rice varieties namely MR211, MRQ74, MR220, MR84 and MR232. The allelopathic effects of F. miliacea were assessed based on the chlorophyll and melondialdehyde (MDA) content, the activity of antioxidant enzymes namely catalase (CAT) and peroxidase (POD) of the rice seedlings, because physiological activities are hindered by allelopathy. Three concentrations of the aqueous extract of the weed (12.5 gl-1, 25 gl-1 and 50 gl-1) and weed debris (5, 10 and 20 g dry debris / 1000 g soil) were used in the experiments carried out in the laboratory and green house, respectively. Among the rice varieties tested, it was observed that the MDA content of MRQ74 increased with increasing concentrations of the aqueous extract. The chlorophyll content of MRQ74 showed the highest reduction (64.5{\%} of the control) in the presence of F. miliacea debris compared to that of the other four varieties, indicating the susceptibility of the rice variety to weed allelopathy. The results showed that there was an imbalance in the activity of catalase (CAT) and peroxidase (POD) in the rice seedlings due to the allelopathic effect of the weed species. The mitotic index of onion root treated with F. miliacea aqueous extract decreased compared to that of the control. The results clearly showed that F. miliacea has definite allelopathic effects on the rice variety, MRQ74 (compared to the other varieties tested).",
author = "Siddique, {Mohammed Abu Bakar} and Ismail Sahid",
year = "2013",
language = "English",
volume = "7",
pages = "2062--2067",
journal = "Australian Journal of Crop Science",
issn = "1835-2693",
publisher = "Southern Cross Publishing and Printing Pty Ltd",
number = "13",

}

TY - JOUR

T1 - Allelopathic effects of Fimbristylis miliacea on the physiological activities of five Malaysian rice varieties

AU - Siddique, Mohammed Abu Bakar

AU - Sahid, Ismail

PY - 2013

Y1 - 2013

N2 - Fimbristylis miliacea, a sedge having allelopathic potential is a dominant weed in the rice fields. Experiments were carried out in the laboratory and greenhouse to evaluate the allelopathic effects of F. miliacea on the physiological activities of five Malaysian rice varieties namely MR211, MRQ74, MR220, MR84 and MR232. The allelopathic effects of F. miliacea were assessed based on the chlorophyll and melondialdehyde (MDA) content, the activity of antioxidant enzymes namely catalase (CAT) and peroxidase (POD) of the rice seedlings, because physiological activities are hindered by allelopathy. Three concentrations of the aqueous extract of the weed (12.5 gl-1, 25 gl-1 and 50 gl-1) and weed debris (5, 10 and 20 g dry debris / 1000 g soil) were used in the experiments carried out in the laboratory and green house, respectively. Among the rice varieties tested, it was observed that the MDA content of MRQ74 increased with increasing concentrations of the aqueous extract. The chlorophyll content of MRQ74 showed the highest reduction (64.5% of the control) in the presence of F. miliacea debris compared to that of the other four varieties, indicating the susceptibility of the rice variety to weed allelopathy. The results showed that there was an imbalance in the activity of catalase (CAT) and peroxidase (POD) in the rice seedlings due to the allelopathic effect of the weed species. The mitotic index of onion root treated with F. miliacea aqueous extract decreased compared to that of the control. The results clearly showed that F. miliacea has definite allelopathic effects on the rice variety, MRQ74 (compared to the other varieties tested).

AB - Fimbristylis miliacea, a sedge having allelopathic potential is a dominant weed in the rice fields. Experiments were carried out in the laboratory and greenhouse to evaluate the allelopathic effects of F. miliacea on the physiological activities of five Malaysian rice varieties namely MR211, MRQ74, MR220, MR84 and MR232. The allelopathic effects of F. miliacea were assessed based on the chlorophyll and melondialdehyde (MDA) content, the activity of antioxidant enzymes namely catalase (CAT) and peroxidase (POD) of the rice seedlings, because physiological activities are hindered by allelopathy. Three concentrations of the aqueous extract of the weed (12.5 gl-1, 25 gl-1 and 50 gl-1) and weed debris (5, 10 and 20 g dry debris / 1000 g soil) were used in the experiments carried out in the laboratory and green house, respectively. Among the rice varieties tested, it was observed that the MDA content of MRQ74 increased with increasing concentrations of the aqueous extract. The chlorophyll content of MRQ74 showed the highest reduction (64.5% of the control) in the presence of F. miliacea debris compared to that of the other four varieties, indicating the susceptibility of the rice variety to weed allelopathy. The results showed that there was an imbalance in the activity of catalase (CAT) and peroxidase (POD) in the rice seedlings due to the allelopathic effect of the weed species. The mitotic index of onion root treated with F. miliacea aqueous extract decreased compared to that of the control. The results clearly showed that F. miliacea has definite allelopathic effects on the rice variety, MRQ74 (compared to the other varieties tested).

UR - http://www.scopus.com/inward/record.url?scp=84890247562&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890247562&partnerID=8YFLogxK

M3 - Article

VL - 7

SP - 2062

EP - 2067

JO - Australian Journal of Crop Science

JF - Australian Journal of Crop Science

SN - 1835-2693

IS - 13

ER -