Impact of leaf extract of Populus deltoides Marsh on germination and seedling growth of greengram (Vigna radiata L.).

摘要

This study evaluated the allelopathic effects of aqueous leaf extracts of Populus deltoides on the seed germination and seedling growth of the green gram (Vigna radiata) cultivars T44, Sona and P16. On the basis of seed germination, germination relative index and vigour index reduction, the maximum inhibitory effect of the extract was observed in PC16, followed by Sona and T44. Increasing leaf extract concentration from 5 to 20% decreased the length and dry weight of shoot and root, and increased the root/shoot ratio of green gram. The leaf extract decreased the soluble sugar and protein content of green gram seedlings, but increased total free amino acid content..