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ALLELOPATHIC POTENTIAL AND ISOLATION PROCESS OF ALLELOPATHIC SUBSTANCES IN BARNYARDGRASS ( Echinochloa crus-galli ).

Duong Hoang Son, Hồ Lệ Thi, Hisashi Kato‐Noguchi

Open publisher page 8 citations

Abstract

Allelopathic activity and allelopathic substances of a serious paddy weed, barnyardgrass (Echinochloa crus -galli ) were investigated. Methanol extracts of barnyardgrass inhibited the growth of cress, alfalfa, lettuce and rice seedlings. The growth inhibitory substance in the extract was purified by silica gel and Sephadex columns, and C18 Sep-Pak cartridges. The inhibitory substance obtained from 0.5 and 1.0 g of barnyardgrass, respectively, inhibited the growth of cress shoots by 64.9 and 75.6%, and cress roots by 67.3 and 88.2%. These results suggest that barnyardgrass may contain allelopathic substances and possess strong phytotoxic property. Thus, barnyardgrass may be able to release allelopathic substances in their surrounding environments.

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What this paper is about

Allelopathic activity and allelopathic substances of a serious paddy weed, barnyardgrass (Echinochloa crus -galli ) were investigated. Methanol extracts of barnyardgrass inhibited the growth of cress, alfalfa, lettuce and rice seedlings. The growth inhibitory substance in the extract was purified by silica gel and Sephadex columns, and C18 Sep-Pak cartridges. The inhibitory substance obtained from 0.5 and 1.0 g of barnyardgrass, respectively, inhibited the growth of cress shoots by 64.9 and 75.6%, and cress roots by 67.3 and 88.2%. These results suggest that barnyardgrass may contain allelopathic substances and possess strong phytotoxic property. Thus, barnyardgrass may be able to release allelopathic substances in their surrounding environments.

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Available abstract

Allelopathic activity and allelopathic substances of a serious paddy weed, barnyardgrass (Echinochloa crus -galli ) were investigated. Methanol extracts of barnyardgrass inhibited the growth of cress, alfalfa, lettuce and rice seedlings. The growth inhibitory substance in the extract was purified by silica gel and Sephadex columns, and C18 Sep-Pak cartridges. The inhibitory substance obtained from 0.5 and 1.0 g of barnyardgrass, respectively, inhibited the growth of cress shoots by 64.9 and 75.6%, and cress roots by 67.3 and 88.2%. These results suggest that barnyardgrass may contain allelopathic substances and possess strong phytotoxic property. Thus, barnyardgrass may be able to release allelopathic substances in their surrounding environments.

Key concepts: Allelopathy, Echinochloa crus-galli, Echinochloa, Weed, Shoot, Chemistry, Germination, Biology

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ALLELOPATHIC POTENTIAL AND ISOLATION PROCESS OF ALLELOPATHIC SUBSTANCES IN BARNYARDGRASS ( Echinochloa crus-galli ). — Research Paper | ScholarLens