热带作物学报2009，Vol.30Issue(10)：1526-1531,6.
空心莲子草水浸液对水稻种子萌发和幼苗生长的化感效应
Allelopathic Effects of Aquatic Lixivium and Extracts from Alternanthera philoxeroides on the Seed Germination and Early Seedling Growth of Rice
摘要
Abstract
Rice seeds and seedlings were treated with aquatic lixivium at different concentrations(0. 0.05,0.1, 0.2 and 0.4 g/mL) and extracts of perennial roots and rhizomes of Alternanthera philoxeroides at different concentrations (0, 0.01, 0.05, 0.1 and 0.2 g/mL). The result showed that the germination vigor,germination rate, shoot height, root length, fresh weight, chlorophyll content, and root dehydrogenase activity tended to decrease with the increase of concentrations of the aquatic lixivium and the extracts, whereas the MDA content increased, as compared with those of the control. Aquatic lixivium and extracts of the perennial roots and rhizomes of A. philoxeroides inhibited seed germination and early seedling growth of rice in a concentration dependant manner, and the higher the concentration the stronger the inhibitory effect; aquatic extracts had greater inhibition effect than the aquatic lixivium at the same concentration.关键词
空心莲子草/水稻/发芽/生长/根系脱氢酶活性/化感作用Key words
Alternanthera philoxeroides/ rice/ allelopathic effects/ germination/ growth/ root dehydrogenase activity.分类
农业科技引用本文复制引用
张远兵,刘爱荣,吴倩..空心莲子草水浸液对水稻种子萌发和幼苗生长的化感效应[J].热带作物学报,2009,30(10):1526-1531,6.基金项目
安徽省教育厅自然科学研究项目(No.2005KJ322z)、(No.2005KJ325z) （No.2005KJ322z）
