Abstract
Allelopthic potential of C. junos fruit waste was investigated for searching its recycling method. The peel powder of C. junos fruit inhibited the root and shoot growth of six test plant species. The putative compound causing the inhibitory effect of C. junos fruit peel was isolated and identified as abscisic acid-β-D-glucosyl ester (ABA-GE). ABA-GE inhibited the growth of six test plants and its inhibitory activity was about one third of that of (+)-ABA. The growth inhibitory activity of peel extract separated from C. junos fruit waste was greatest and followed by that of segment cover and seeds from the waste. ABA-GE concentration was greatest in the peel extract, followed by the segment cover extract and seed extract, suggesting that there was a good correspondence between concentrations and inhibitory activities of the extracts. Therefore, the C. junos waste may have allelopathic potential, and may be potentially useful for weed suppressive agent.
