摘要
采用甲醇提取法提取新林地土、人参根际土以及栽培人参(Panaxginseng)、西洋参(Panaxquinquefolius)的老参地土。每种土壤提取物设6个质量浓度梯度,以研究不同土壤提取物在特定质量浓度下对人参种子胚根和胚轴生长的化感效应,每种处理设3次重复。试验结果表明,与对照相比,人参根际土提取物对人参种子生长的化感效应最强,老参地土提取物对人参种子生长的化感效应次之,新林地土提取物对人参种子生长的化感效应最弱。经GC-MS分析,分别从6种土壤提取物中检测到14～25种数量不等的化合物组分,其中苯胺类物质、酚酸及其衍生物被报道在其它植物上有化感活性,可能参与对人参种子的生理性毒害作用。
Methanol extract method was used to extract new forestry soil, ginseng （Panax ginseng） rhizosphere soil, ginseng- and American ginseng （Panax quinquefolius）-cultivated soils. For each soil extract, six concentrations were used to study the allelopathic effects on the radicles and hypocotyls growth of ginseng seeds with three replicates. Results indicated that, compared with CK, the allelopathic effect of ginseng rhizosphere soils extract on the radicles and hypocotyls growth of ginseng seeds was the strongest, ginseng- and American ginseng-cultivated soils extracts were in the mediate, and extracts of new forestry soils were minor. GC-MS analysis results showed that, fourteen to twenty five components were detected from six soil extracts, respectively. Phenylamine, phenolic acid and its derivativesdetected were reported have allelopathic activity on other plants, and which were presumed concern with the physiological autotoxicity on ginseng seeds in this study.
出处
《生态环境》
CSCD
北大核心
2008年第3期1173-1178,共6页
Ecology and Environmnet
基金
国家自然科学基金项目(30672619)
国家“十一五”科技支撑计划项目(2006BAI09B04-01)
