S. M. A. MATIN
Institute of Biological Sciences, University of Rajshahi, Rajshahi, Bangladesh.
W. ISLAM
Institute of Biological Sciences, University of Rajshahi, Rajshahi, Bangladesh.
ABSTRACT
The leaves, seed and stem bark of Adenanthera pavonina (L.) were extracted in different organic solvents namely Petroleum ether, acetone, chloroform and methanol to investigate the repellent activities of Callosobruchus chinensis L. (Bruchidae). The extracts from the above solvents showed repellent activities against adult C. chinensis at 471.50, 235.75, 117.88, 58.94, and 29.47 μg/cm2 on filter paper. All the test extracts offered repellency at 0.01% level of significance except the stem (acetone) extract which was found 0.1% level of significance (P<0.01). According to the intensity of repellency the result could be arranged in a descending order: leaf (petroleum ether extract) >leaf (chloroform extract) >seed (methanol extract > stem wood (acetone) extract and in all the cases significant differences were noticed.
Keywords: Extracts, Adenanthera pavonina, repellent, Callosobruchus chinensis.
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