文献类型： 外文期刊

作者： Su, S. ¹ ; Wang, Z. F. ¹ ; Zeng, Y. F. ¹ ; Shi, X. H. ¹ ; Yang, H. ¹ ; Cao, H. Q. ¹ ; Wang, X. X. ¹ ; Li, Y. ¹ ;

作者机构： 1.Guizhou Med Univ, State Key Lab Funct & Applicat Med Plants, 3491 Baijin Rd, Guiyang 550014, Guizhou, Peoples R China

2.Guizhou Acad Agr Sci, Guizhou Inst Pratacultural, Guiyang 550006, Guizhou, Peoples R China

3.Key Lab Chem Nat Prod Guizhou Prov, Guiyang 550014, Guizhou, Peoples R China

4.Chinese Acad Sci, Guiyang 550014, Guizhou, Peoples R China

5.Yanan Inst Tradit Chinese Med, Yanan 716000, Shaanxi, Peoples R China

6.Zhejiang Acad Agr Sci, Flower Res & Dev Ctr, Hangzhou 310000, Zhejiang, Peoples R China

7.Yanan Univ, Coll Chem & Chem Engineening, Yanan 716000, Shaanxi, Peoples R China

8.Audiovisual Educ Ctr Yanan Baota Area, Yanan 716000, Peoples R China

9.Anhui Acad Agr Sci, Hefei 230031, Anhui, Peoples R China

关键词： Allelochemical; Alternanthera philoxeroides; Amaranthus retroflexus; bioassay; Conyza canadensis; herbicidal activity; 2-hydroxy-4-methoxybenzaldehyde; Mikania micrantha; Periploca sepium; Humulus Scandens; Portulaca oleracea; seed germination; seedlings growth; Setaria viridis; toxicity; weed

期刊名称：ALLELOPATHY JOURNAL （ 影响因子：0.962； 五年影响因子：0.99 ）

ISSN： 0971-4693

年卷期： 2019 年 47 卷 2 期

页码：

收录情况： SCI

摘要： This study aimed to examine the role of the allelochemicals in the root bark of Periploca sepium Bunge in weed management. The allelochemical was isolated using a bioactivity-guided method and characterised as 2-hydroxy-4-methoxy-benzaldehyde by H-1 and C-13 1D NMR spectroscopic data. The herbicidal activity of 2-hydroxy-4-methoxy-benzaldehyde against 6 common weeds (Amaranthus retroflexus, Alternanthera philoxeroides, Humulus Scandens, Conyza canadensis, Mikania micrantha, Portulaca oleracea, Setaria viridis) was evaluated in growth bioassays, contact bioassays and rooting bioassays. The Application of 2-hydroxy-4-methoxy-benzaldehyde at 1mg/ml completely inhibited the seeds germination and also significantly inhibited the growth of taproot and caulis in test weeds. The results of contact bioassays showed dose-dependent toxicity of 2-hydroxy-4-methoxy-benzaldehyde to the leaves of all test weeds. The test weeds leaves wilted, after the treatment and the injured leaves did not recover. With the decreasing concentration of 2-hydroxy-4-methoxy-benzaldehyde, the toxicity symptoms of the tested on leaves were gradually reduced. Besides, the rooting bioassays results showed that 2-hydroxy-4-methoxy-benzaldehyde at 0.0625 mg/ml concentration significantly inhibited the rooting in Alternanthera philoxeroides Griseb. To conclude, 2-hydroxy-4-methoxybenzaldehyde might be a potential broad-spectrum herbicide.