ZHOU Xiumei,WANG Yujie,LI Baoyin,et al.Self-allelopathy Effect of Water Extracts of Elsholtzia stauntonii on Its Seed Germination[J].Northern Horticulture,2016,40(15):62-66.[doi:10.11937/bfyy.201615016]
木香薷水浸液对其种子萌发的自化感效应
- Title:
- Self-allelopathy Effect of Water Extracts of Elsholtzia stauntonii on Its Seed Germination
- Keywords:
- Elsholtzia stauntonii Benth.; water extract; seed; self-allelopathy
- 文献标志码:
- A
- 摘要:
- 以木香薷为试材，以自然风干常温保存6个月的木香薷茎、叶、花序为供体，4 ℃干藏2个月的木香薷种子为受体，采用3×5二因素完全随机试验设计，测定了种子生物活性（发芽势、发芽率、发芽指数、成苗率），探索了木香薷的自化感效应。结果表明：除供体类型对成苗率有显著影响（P＜0.05）外，供体类型和水浸液浓度对受体的发芽势、发芽指数、发芽率、成苗率均有极显著影响(P＜0.01)。供体自化感效应的强弱顺序是叶＞花序＞茎；叶的水浸液对其种子萌发起化感抑制作用，且随水浸液浓度升高抑制作用增强；茎和花序的水浸液对其种子萌发表现为“低促高抑”的浓度效应。不同供体处理对受体4项指标均起抑制作用，由强到弱的顺序是发芽势＞发芽指数＞成苗率＞发芽率。由于叶片淋溶是木香薷释放化感物质的主要途径之一，故栽培管理中应注意清除枯枝落叶，以减轻化感自毒作用。
- Abstract:
- Taking Elsholtzia stauntonii Benth.as material，and taking the air-dried stems，leaves and inflorescences stored in the lab for 6 months of Elsholtzia stauntonii Benth.as the donor and its seeds stored at 4 ℃ for 2 months as the recipient，the four indexes such as the germination energy，germinating index，germination percentage and seedling percentage were determined by bioassay method in the lab，with 3×5 factorial complete randomized design，in order to study the self-allelopathy of E.stauntonii. The results showed that：both donor type and water extract concentration had great significant effects (P＜0.01) on the germination energy，germination index，germination percentage and seedling percentage，except donor type on seedling percentage(P＜0.05).The self-allelopathy order from the strongest to the weakest was leaf>inflorescence>stem and the inhibitory effect of leaf aqueous extracts on its seed germination was stronger with the concentration increasing and the aqueous extracts of stems and inflorescences had a ‘hormesis’ concentration effect on the seed germination.Different treatments had inhibited effects on the four indexes of the recipient，the order from strong to weak was the germination energy>germination index>seedling percentage>germination percentage.Leave leaching was one of the main ways to release allelochemicals.So，for the reasonable cultivation and management of E. stauntonii，the fallen leaves and dead branches should be removed on time in order to relieve the autotoxicity.
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备注/Memo
第一作者简介：周秀梅(1966-)，女，河南兰考人，博士，副教授，硕士生导师，现主要从事园林植物与观赏园艺的教学与科研等工作。E-mail：zxm@hist.edu.cn.基金项目：河南省科技厅科技攻关资助项目（112102310449）；河南科技学院博士启动基金资助项目（2008012）。