PHYTOTOXIC POTENTIAL OF Ipomoea batatas EXTRACT , DETECTED THROUGH A NEW TYPE OF SANDWICH MICROBIOASSAY ON THREE SPECIES OF WEEDS

Sociedade Brasileira da Ciencia das Plantas Daninhas

GUILLEN-SÁNCHEZ, D.¹  GUADALUPE-TAPIA, G.²  HERNÁNDEZ-ARO, M.³  HERNÁNDEZ-PÉREZ, R.⁴  CASTELLANOS-GONZÁLEZ, L.⁵ 

[1] Autonomous University of Morelos, Cuautla, Mexico;Chapingo Autonomous University, Mexico;Faculty of Agricultural Sciences, Santa Clara, Cuba;Fitolab. A. S. Puxtla, Cuautla, Mexico;University of Pamplona, North of Santander, Colombia

关键词: allelopathy;    sweet potato;    residues;    A. hybridus;    P. oleracea;    B. campestri..;   

DOI  :  10.1590/s0100-83582017350100035

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

Nowadays, it is very important for researchers to find alternatives that enable the development of a profitable agriculture and a clean environment, therefore, the strategy evaluated in the present study is geared towards the use of the allelopathic effect of many plants. The main objective was to assess the efficiency of a compound derived from extracts of sweet potato (Ipomoea batatas on three weed species under controlled conditions. Different concentrations (1, 5, 10% w/v) were evaluated through a sandwich-type microbioassay in comparison with the traditional Petri dished culture technique. Both tests demonstrated the phytotoxic activity of aqueous extracts of I. batatas, which caused inhibition of germination of A. hybridus, P. oleracea and B. campestri. It was observed that use of the microbioassay allowed the optimization of resources used for analysis, required much less amounts of extracts and facilitated the analysis of a larger number of samples per unit of time. This offers a new economic and efficient alternative to quickly assess the phytotoxic effect of many donors’ species before field tests.

【 授权许可】

CC BY