浙江农林大学学报2017，Vol.34Issue(3)：427-436,10.DOI:10.11833/j.issn.2095-0756.2017.03.007
香蒲不同部位水浸提液对4种水生植物种子的化感作用
Allelopathic effects of aqueous extracts from different organs of Typha orientalis on seeds of four aquatic plants
摘要
Abstract
This study was conducted to explore the allelopathic the law of action for aquatic extracts using dif-ferent organs of Typha orientalis and the effect on seeds of four species of hydrophytes: Iris pseudacorus, Val-lisneria natans, Nymphoides peltatum, and Phragmites australis. The petri-dish cultivation method was used to determine the influence on germination and growth of the radicle and seedling using three different concentra-tions including 0.5 g·L-1, 5.0 g·L-1 and 50.0 g·L-1 of root, leaf, and pollen extracts on the four prepared seeds. In addition, the activities of malondialdehyde (MDA) and superoxide dismutase (SOD) for I. pseudacorus were measured. Results showed that root, leaf, and pollen extracts of T. orientalis had strong effects on germination and seedling growth. Overall, low concentrations promoted and high concentrations inhibited with inhibition be-ing in the order of leaf extract > pollen extract > root extract and with the effect on the radicle being greater than the seedling. For three aquatic extracts, MDA activity of Iris pseudacorus increased with the extract con-centration; whereas, SOD activity showed an 'up-down' pattern. Thus, the effects of T. orientalis aqueous extracts on seeds of aquatic plants caused membrane lipid peroxidation and destroyed antioxidant enzyme sys-tems which eventually affected the germination and growth of seedlings; meanwhile, leaves were the main organ causing allelopathic effects.关键词
植物学/香蒲/水浸提液/化感作用/抑制作用Key words
botany/Typha orientalis/aquatic extract/allelopathy/inhibition分类
农业科技引用本文复制引用
冯彬,何云核,赵爽,郭明..香蒲不同部位水浸提液对4种水生植物种子的化感作用[J].浙江农林大学学报,2017,34(3):427-436,10.基金项目
国家级大学生创新创业训练计划项目(201410341016) （201410341016）
浙江省大学生创新创业训练计划项目(201211030221) （201211030221）
