互花米草与3种本地红树植物叶片化感潜力比较

doi:10.16088/j.issn.1001-6600.2015.02.017

广西师范大学学报（自然科学版） ›› 2015, Vol. 33 ›› Issue (2): 109-114.doi: 10.16088/j.issn.1001-6600.2015.02.017

互花米草与3种本地红树植物叶片化感潜力比较

段琳琳¹, 梁士楚^1,2, 李富荣^1,2,3, 周巧劲^1,2

1.广西师范大学生命科学学院,广西桂林541004;
2.珍稀濒危动植物生态与环境保护教育部重点实验室(广西师范大学),广西桂林541004;
3. 广东省农业科学院农产品公共监测中心,广东广州510640

收稿日期:2015-03-13 出版日期:2015-02-10 发布日期:2018-09-20
通讯作者: 李富荣(1984—),女,湖北仙桃人,广西师范大学副教授,博士。E-mail: lifr0314@163.com
基金资助:
广西自然科学基金资助项目(2013GXNSFBA019071;2012GXNSFEA053001);广东省农业科学院院长基金资助项目(201418)

Comparison of the Leaf Allelopathic Potential of the Invasive WetlandPlant Spartina alterniflora and Three Native Mangrove Plants

DUAN Lin-lin¹, LIANG Shi-chu^1,2, LI Fu-rong^1,2,3, ZHOU Qiao-jin^1,2

1.College of Life Science, Guangxi Normal University, Guilin Guangxi 541004, China;
2.Public Monitoring Centerfor Agro-product of Guangdong Academy of Agricultural Sciences, Guangzhou Guangxi 501640, China;
3. Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University), Ministry of Education, Guilin Guangxi 541004, China

Received:2015-03-13 Online:2015-02-10 Published:2018-09-20

摘要/Abstract

摘要： 为揭示化感作用在湿地入侵植物互花米草与本地红树植物竞争关系中的影响,本研究以萝卜为受体,用培养皿法比较互花米草与3种本地红树植物叶片化感潜力大小。结果表明:各植物浸提液对受体植物不同检测指标的化感效应不一致。木榄浸提液在0.2 g·mL^-1浓度下对萝卜种子萌发抑制率达最大值34.3%,但并不显著,而互花米草的高浓度浸提液均明显抑制萝卜种子萌发,且高于其他2种红树植物。4种植物浸提液对萝卜根长生长均在高浓度时表现为明显的抑制作用,且在浸提液浓度为0.2 g·mL^-1时,桐花树对萝卜幼苗根长的化感抑制作用达最大76.4%,而对幼苗苗高则普遍表现为化感促进效应。在萝卜幼苗鲜质量方面,互花米草和秋茄表现为促进作用,而木榄和桐花树的化感效应表现出“高抑低促”的规律。

关键词: 互花米草, 化感作用, 红树植物, 生物入侵, 湿地

Abstract: To compare the allelopathic potential of the wetland invasive plant Spartina alterniflora and the native mangrove plants Bruguiera gymnorrhiza, Aegiceras corniculatum, and Kandelia candel, the allelopathic effects of aqueous extracts of the four plants on seed germination and seedling growth of radish (Raphanus sativus) were studied by using indoor Petri dish bioassay method. The results showed that both S. alterniflora and the native mangrove plants had allelopathic potential. But their allelopathic effects on the different examination indexes of radish were diverse. When the aqueous extract concentration was 0.2 g·mL^-1, the inhibitory rate of B. gymnorrhiza reached 34.3% of the maximum, but it was not significant. Under the relatively high concentrations of plant extracts, S. alterniflora had significantly inhibitory effect on the radish seed germination, which was stronger than those of the other two mangrove plants. All the four plant extracts with high concentrations significantly exhibited inhibitory effects on the radish root growth. And the inhibitory rate of A. corniculatum extract under 0.2 g·mL^-1reached 76.4% of the maximum. However, allelopathic stimulation effects on radish seedling height and fresh weight were common for the four plants, except that the allelopathic effects of B. gymnorrhiza and A. corniculatum were allelopathic inhibition under high concentrations and allelopathic stimulation under low concentrations to radish fresh weight.

Key words: Spartina alterniflora, allelopathy, mangrove plant, biological invasion, wetland

中图分类号:

Q948.12

段琳琳, 梁士楚, 李富荣, 周巧劲. 互花米草与3种本地红树植物叶片化感潜力比较[J]. 广西师范大学学报（自然科学版）, 2015, 33(2): 109-114.

DUAN Lin-lin, LIANG Shi-chu, LI Fu-rong, ZHOU Qiao-jin. Comparison of the Leaf Allelopathic Potential of the Invasive WetlandPlant Spartina alterniflora and Three Native Mangrove Plants[J]. Journal of Guangxi Normal University(Natural Science Edition), 2015, 33(2): 109-114.

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互花米草与3种本地红树植物叶片化感潜力比较

Comparison of the Leaf Allelopathic Potential of the Invasive WetlandPlant Spartina alterniflora and Three Native Mangrove Plants

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