Promotion of adventitious root growth by coffee extracts

The preliminary screening results on plant growth regulation of the ethanolic extract of reasted coffee indicated that at high concentration the growth inhibition of plant seeds were observed, while at low concentration the growth promotion clearly visualized. In addition, the highest growth promotion of C. atropurpureus (55%) stimulated by the extract from roasted coffee at 100 ppm was observed while that of H. rosa-sinensis was achieved at 1000 ppm (84%). The bioassay-guided fractionation of the...
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