浙江农林大学学报2012，Vol.29Issue(5)：722-728,7.
再力花地下部水浸提液对几种常见水生植物的化感作用
Allelopathic effects from aqueous extracts of exotic Thalia dealbata on six aquatic plant species
摘要
Abstract
To test the allelopathic effects of Thalia dealbata on seed germination and seedling growth, aqueous extracts of the T. dealbata rhizome and root were applied to six aquatic plants; namely, Nymphoides pelta-tum, Vallisneria natans , Nasturtium qfficinale , Iris pseudacorus , Phragmites australis , and Polygonum hy-dropiper using the bioassay method. Results showed that the aquatic rhizome and root extracts at a concentration of 50 g·L-1 had highly significant (P < 0.01) allelopathic effects on seed germination for all six aquatic plant species. Seedling shoot length for the six listed species above were reduced 29.2% , 64.9% , 42.3% , 87.1%, 18.2%, and 75.6%, respectively; and seedling root length was reduced 50.5%, 90.1%, 72.7%, 76.2%, 29.9%, and 74.2%, in that order. Also the seed germination index was more sensitive to extract application than germination percentage and other indexes with allelopathic sensitivity in the order of Polygonum hydropiper > Nasturtium qfficinale > V. natans > /. pseudacorus > Nymphoides peltata > Phragmites australis.关键词
植物学/再力花/化感作用/水生植物/水浸提液/种子萌发Key words
botany/ Thalia dealbata/ allelopathy/ aquatic plant/ aqueous extract/ seed germination分类
农业科技引用本文复制引用
王媛,缪丽华,高岩,季梦成..再力花地下部水浸提液对几种常见水生植物的化感作用[J].浙江农林大学学报,2012,29(5):722-728,7.基金项目
杭州市科技计划项目(20100933B18) （20100933B18）
中国湿地博物馆重点资助项目(CWM2010-W02) （CWM2010-W02）
