蕨菜(Pteridium aquilinum)的化感作用库恩)关于重要经济杂草的萌发和生长

IF 0.3 Q4 AGRONOMY
Y. Mira, Luis A. Ramírez, L. F. Londoño, Darío A. Castañeda
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引用次数: 0

摘要

蕨类植物是一种世界性的植物,具有很强的竞争能力,包括化感作用。寻找对其他不良植物具有负面化感作用的植物,发现了新的有用物质来控制杂草。本研究的目的是评价aquilinum对四种经济上重要的杂草:鬼针草(Bidens pilosa L.)、外倾Brachiaria decumbens Stapf和Emilia sonchifolia(L.)DC的种子萌发和生长的化感作用。ex DC和Rumex crispus L.在实验室和温室条件下分别使用P.aquilinum的提取物和干燥的植物残留物进行了两个实验。对于第一个实验,使用四种不同的溶剂(己烷、二氯甲烷、乙酸乙酯和甲醇)获得苦咸水提取物,并将其应用于试验种子;测定发芽率。在第二个实验中,将干的苦咸水残留物以2%、5%和10%的浓度施用到土壤中,并测定它们对杂草生长变量的影响;还包括对照治疗(不应用)。此外,还对每种提取物中存在的一些化学基团进行了定性检测。该提取物对所有研究物种的种子发芽抑制率为52-97%。二氯甲烷和甲醇是最有效的溶剂,而松叶是最敏感的物种。苦咸水的干残留物使所有杂草的发芽率降低了18-44%,毛鬼针草和外倾Brachiaria的根长也降低了(-30%)。植物化学分析显示提取物中存在黄酮类化合物、单宁和多酚。这些结果表明,aquilinum可以作为一种很好的生物防治杂草的替代品,并为生物除草剂的开发提供了知识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ALLELOPATHIC EFFECTS OF COMMON BRACKEN (Pteridium aquilinum (L.) Kuhn) ON GERMINATION AND GROWTH OF ECONOMICALLY IMPORTANT WEEDS
Pteridium aquilinum (L.) Kuhn is a cosmopolitan plant with great competitive abilities, including allelopathy. The search for plants with negative allelopathic effects on other undesirable plants has led to the discovery of new useful substances for weed control. The objective of this research was to evaluate the allelopathic effect of P. aquilinum on seed germination and growth of four economically important weeds: Bidens pilosa L., Brachiaria decumbens Stapf, Emilia sonchifolia (L.) DC. ex DC and Rumex crispus L. Two experiments were conducted under laboratory and greenhouse conditions using extracts and dried plant residues of P. aquilinum, respectively. For the first experiment, extracts of bracken were obtained using four different solvents (hexane, dichloromethane, ethyl acetate, and methanol) and applied to the test seeds; germination rates were determined. For the second experiment, dry residues of bracken were applied to the soil at concentrations of 2, 5, and 10% and their effect on weed growth variables was determined; a control treatment (no appliacation) was also included. In addition, the presence of some chemical groups associated with each type of extract was qualitatively detected. The extracts inhibited seed germination by 52 - 97% in all the studied species. Dichloromethane and methanol were the most efficient solvents, while E. sonchifolia was the most sensitive species. The dry residues of bracken reduced germination by 18 - 44% of all the weeds, as well as root length of Bidens pilosa (-30%) and Brachiaria decumbens (-82%). The phytochemical analysis showed the presence of flavonoids, tannins, and polyphenols in the extracts. These results suggest that P. aquilinum can be a good alternative for the biocontrol of the weeds under study and provide knowledge for the development of bioherbicides.
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来源期刊
CiteScore
0.70
自引率
0.00%
发文量
23
期刊介绍: Revista Chile de Agricultura y Ciencias Veterinarias es una revista de acceso abierto (open access), que significa que su contenido está disponible en forma gratuita para los usuarios y sus instituciones. Los usuarios pueden leer, descargar, copiar, distribuir, imprimir, buscar, o establecer una conexión a los artículos sin necesidad de pedir autorización previa al editor o a los autores. Esto es de acuerdo con la definición de Budapest Open Access Initiative (BOAI). Los artículos se publican bajo una licencia de Creative Commons reconocimiento No Comercial 4.0 Internacional. Copyright: Se autoriza la reproducción y cita de los artículos publicados en Chilean Journal of Agricultural & Animal Sciences (ex Agro-Ciencia), siempre que se indique el nombre del autor(es), año, volumen, número y páginas. Las opiniones y afirmaciones expuestas en los trabajos representan exclusivamente los puntos de vista de los autores. La mención de productos o marcas comerciales en la revista no implica una recomendación por parte de la Universidad de Concepción.
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