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Asian Journal of Crop Science
  Year: 2010 | Volume: 2 | Issue: 2 | Page No.: 70-77
DOI: 10.3923/ajcs.2010.70.77
Allelopathic Potential of Methanol Extract of Bangladesh Rice Seedlings
M. A. Salam and H. Kato-Noguchi

Abstract:
This study was conducted to evaluate the growth inhibitory effects of methanol extracts of 14 Bangladesh rice cultivars against the growth of three target plant species, cress (Lepidium sativum L.), crabgrass (Digitaria sanguinalis L.) and timothy (Phleum pratense L.). Methanol extracts of all rice seedlings showed inhibitory effects on shoot and root elongation of the three target species. The growth inhibitory activity was proportional to the extract concentrations. The effectiveness of all extracts on the roots of the target plant species was much higher than that on their shoots. The extracts obtained from rice cultivars BR16, BR22, BR26, BRRI dhan28 and BRRI dhan43 had relatively stronger growth inhibitory activity than those of other rice cultivars. The extract of rice cultivar BR17 had the strongest inhibitory activity against the root growth of all target plant species and the shoot growth of cress and crabgrass. These results suggested that methanol extracts of Bangladesh rice seedlings may contain allelopathic substances that can be isolated and identified to further use as bio-herbicides for weed control and BR17 may contain the greatest herbicidal substance.
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How to cite this article:

M. A. Salam and H. Kato-Noguchi, 2010. Allelopathic Potential of Methanol Extract of Bangladesh Rice Seedlings. Asian Journal of Crop Science, 2: 70-77.

DOI: 10.3923/ajcs.2010.70.77

URL: https://scialert.net/abstract/?doi=ajcs.2010.70.77

 
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