Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4569169 | Scientia Horticulturae | 2009 | 5 Pages |
Abstract
The effect of enhanced ultraviolet-B on allelopathic potential of Zanthoxylum bungeanum was investigated. A significant inhibitory effect on germination rate of crop seeds under bioassay was observed at 25 g lâ1 and 50 g lâ1 by extracts from Zanthoxylum leaf both treated with enhanced ultraviolet-B radiation and untreated control. Medicago sativa and lettuce were more sensitive than radish to the extract from Zanthoxylum leaf treated with enhanced UV-B radiation, as the germination rates of M. sativa and lettuce were significantly reduced compared to control at 25 g lâ1 and 50 g lâ1, and so did alfalfa at 12.5 g lâ1. However, as for radish (Raphanus sativus) there was no significant reduction in germination rate at any concentration under bioassay compared to control. Content of UV-B absorbing compounds and total phenols in Zanthoxylum seedlings responded positively to enhanced UV-B radiation. The results suggest that the allelopathic potential of Z. bungeanum was generally improved under enhanced UV-B radiation.
Keywords
Related Topics
Life Sciences
Agricultural and Biological Sciences
Horticulture
Authors
Hong-yi Li, Kai-wen Pan, Qing Liu, Jin-chuang Wang,