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Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
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Abstract - Issue Mar 2009, 29 (2) BackAllelotoxicity of Parthenium leaf
extracts on cytomorphological behaviour of
sunflower (Helianthus annuus) G. Kumar* and Neelam
Gautam Plant Genetics Laboratory,
Department of Botany, (Received: October 17, 2006 ; Revised received: March 29, 2007 ; Re-revised
received: April 18, 2007 ; Accepted: April 30, 2007) Abstract: In recent decades allelopathy has gained much attention in the sustainable
agricultural systems. It is necessary to trace out the mechanism of action of allelochemicals of plants on other plants. Allelochemicals of different plants interact differently
with each other. In the present context an attempt has been made to study the
influence of allelochemicals released by Parthenium on the growth, morphology and cytology of
Helianthus annuus, both being strong allelopathic plants. The lower concentration of decomposed Parthenium leaves showed enhancing effect while higher
doses depicted suppressive effect on growth and morphology of Helianthus annuus. However, cytological studies of pollen mother cells
(PMCs) revealed increase in abnormality percentage
with increasing concentration of allelochemicals.
This study suggests better understanding of allelochemicals
interaction and their incorporation into the betterment of crop. Key words: Allelopathy, Sunflower, Parthenium, Chromosomal aberrations PDF of full length paper is available with
author (kumar_girjesh@yahoo.com) Copyright
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