浙江农林大学学报2011，Vol.28Issue(1)：109-114,6.
大花金鸡菊水浸液对6种常见园林植物种子萌发的化感作用
Allelopathic effects from aqueous extracts of exotic Coreopsis grandiflora on seed germination of six native ornamental plant species
摘要
Abstract
In order to make clear the allelopathic effects of the exotic Coreopsis grandiflora on the native plant species, we studied the effects from aqueous leaf and root extracts of C. grandiflora on the seed germination of Cynodon dactylon, Agrostis spp., Zoysia japonica, Orychophragmus violaceus, Dianthus chinensis, and Celosia cristata using the bioassay. Results showed that the aquatic leaf extract of C. grandiflora had significant allelopathic effects on seed germination of the six plant species, with the effects varying with the concentration of the extract. Foliar extracts at a concentration of 50.0 g·L-1 were found to be inhibitory (P＜0.01) to seed germination for C. dactylon, Agrostis spp., Z japonica and O. violaceus, with inhibition rates of 39.33％,56.0％, 53.33％, and 46.22％, respectively, compared with the control. In addition, the seed germination index was more sensitive to extract application than the germination percent, with allelopathic sensitivity in the order of Z. japonica＞Agrostis spp. and O. violaceus ＞C. dactylon ＞D. chinensis ＞C. cristata. Results suggested that for the exotic C. grandiflora allelopathy may play an important role when competing with native plants.关键词
植物学/大花金鸡菊/园林植物/水浸提液/种子萌发/化感作用Key words
botany/ Coreopsis grandiflora/ landscape plant/ aqueous extract/ seed germination/ allelopathy分类
农业科技引用本文复制引用
杜明利,高岩,张汝民,高群英,傅杭飞..大花金鸡菊水浸液对6种常见园林植物种子萌发的化感作用[J].浙江农林大学学报,2011,28(1):109-114,6.基金项目
国家自然科学基金资助项目(30760193) （30760193）
浙江农林大学科研发展基金资助项目(2010FR057) （2010FR057）
