Allelopathic effects, yields and qualitative phytochemical screening of root exudates of five weed species

Akter, Pervin and Sultana, Barat (2019) Allelopathic effects, yields and qualitative phytochemical screening of root exudates of five weed species. Malaysian Journal of Sustainable Agriculture (MJSA) (Malaysia), 3. pp. 44-48. ISSN 2521-2931

This research investigated the allelopathic effects, the yields and qualitative phytochemical screening of the water extract of root exudates of five weed species i.e. Cyperus rotundus L. (T1), Marselia quadrifolia L. (T2), Ludwigia hyssopifolia (G. Don) Exell, (T3) Pistia stratiotes L. (T4) and Colocasia esculenta L. (T5). The allelopathic tests of root exudates on five weed species showed that all the extracts had the pronounced inhibitory effect on cowpea and mungbean (tested crops). The yields of root exudates of the selected weed species varied. Root exudate of T3 showed the highest yield whereby T1 contained the lowest one. A preliminary phytochemical test showed the positive result of alkaloids, flavonoids, phenols and carbohydrates whereas proteins, amino acids, tannins, saponins, have been found to be absent in the root exudates of tested weeds. The results evidenced that these mentioned weeds contain compounds in their root exudates which may cause allelopathic effects on both tested crops.

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Abstract

This research investigated the allelopathic effects, the yields and qualitative phytochemical screening of the water extract of root exudates of five weed species i.e. Cyperus rotundus L. (T1), Marselia quadrifolia L. (T2), Ludwigia hyssopifolia (G. Don) Exell, (T3) Pistia stratiotes L. (T4) and Colocasia esculenta L. (T5). The allelopathic tests of root exudates on five weed species showed that all the extracts had the pronounced inhibitory effect on cowpea and mungbean (tested crops). The yields of root exudates of the selected weed species varied. Root exudate of T3 showed the highest yield whereby T1 contained the lowest one. A preliminary phytochemical test showed the positive result of alkaloids, flavonoids, phenols and carbohydrates whereas proteins, amino acids, tannins, saponins, have been found to be absent in the root exudates of tested weeds. The results evidenced that these mentioned weeds contain compounds in their root exudates which may cause allelopathic effects on both tested crops.

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Item Type:	Article
AGROVOC Term:	weeds
AGROVOC Term:	root exudates
AGROVOC Term:	cowpeas
AGROVOC Term:	mungbean yellow mosaic virus
AGROVOC Term:	Cyperus rotundus
AGROVOC Term:	Pistia stratiotes
AGROVOC Term:	Colocasia esculenta
AGROVOC Term:	phytochemicals
AGROVOC Term:	allelopathy
AGROVOC Term:	alkaloids
Geographical Term:	Bangladesh
Depositing User:	Mr. Khoirul Asrimi Md Nor
Date Deposited:	28 Apr 2026 04:11
Last Modified:	28 Apr 2026 04:11
URI:	http://webagris.upm.edu.my/id/eprint/3866

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