肾叶泥车前草叶提取物对四种植物萌发的除草活性

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100061

Laís T. Perboni, D. Agostinetto, Juliano Gazola, Daniela Tessaro, Marlon M. Teixeira, Alessandro Neutzling

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Objective: The goal was to evaluate the effect of hexanic, ethyl acetate and methanolic extracts of H. reniformis leaves on cress (Lepidium sativum) seed germination to determine which one have the highest biological activity; and to evaluate different concentrations of extract with the highest biological activity on lettuce (Lactuca sativa), barnyard grass (Echinochloa sp.) and giant arrowhead (Sagittaria montevidensis) germination. Methods: The seeds were placed on petri dishes containing two sheets of germitest paper, and after the application of the extract, they were sealed and placed in growth chambers with controlled temperature and photoperiod. The variables analyzed were 1st and 2nd germination count, germination speed index and length of the aerial part and roots. Results: The ethyl acetate extract provided greater phytotoxicity on cress than the other extracts. 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引用次数: 0

摘要

背景:植物合成专门的代谢化合物来保护自己免受生物和非生物胁迫。这些化合物可以作为农药开发的模型。在尚未研究可能产生活性化合物的物种中，有肾叶泥车前草(Heteranthera reniformis)。目的:通过对己烷提取物、乙酸乙酯提取物和甲醇提取物对芥蓝种子萌发的影响进行评价，确定其生物活性最高的提取物;并评价不同浓度提取物对生菜(Lactuca sativa)、禾草(Echinochloa sp.)和大箭头(Sagittaria montevidensis)萌发的最高生物活性。方法:将种子置于两张胚试纸的培养皿中，浸提液涂抹后密封，置于控制温度和光周期的生长室内。分析的变量为第一次和第二次发芽数、发芽速度指数、地上部和根系长度。结果:乙酸乙酯提取物比其他提取物具有更强的植物毒性。总的来说，最高浓度的乙酸乙酯提取物对所有物种的减少变量最有效。结论:芦笋乙酸乙酯提取物对芥蓝、莴苣、巨箭草和禾草种子均有抑制作用，但其抑制作用与提取物浓度和所研究的植物种类有关。reniformis合成具有植物毒性活性的化合物，需要对提取物进行纯化，以分离、鉴定和表征具有除草剂活性的化合物的作用机制，以便将来这些化合物可以作为开发除草剂的模型。[3][植物学报][j]。大车前草肾叶泥大车前草提取物的除草活性研究;2020;38:e020229957 https://doi.org/10.1590/S0100-83582020380100061 2/10

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Herbicidal activity of kidney leaf mud plantain leaves extracts on the germination of four species

Background: Plants synthesize compounds of specialized metabolism to defend themselves against biotic and abiotic stresses. These compounds could be used as models for pesticide development. Among the species that have not yet been studied for the potential to produce active compounds is the kidney leaf mud plantain (Heteranthera reniformis). Objective: The goal was to evaluate the effect of hexanic, ethyl acetate and methanolic extracts of H. reniformis leaves on cress (Lepidium sativum) seed germination to determine which one have the highest biological activity; and to evaluate different concentrations of extract with the highest biological activity on lettuce (Lactuca sativa), barnyard grass (Echinochloa sp.) and giant arrowhead (Sagittaria montevidensis) germination. Methods: The seeds were placed on petri dishes containing two sheets of germitest paper, and after the application of the extract, they were sealed and placed in growth chambers with controlled temperature and photoperiod. The variables analyzed were 1st and 2nd germination count, germination speed index and length of the aerial part and roots. Results: The ethyl acetate extract provided greater phytotoxicity on cress than the other extracts. In general, the highest concentration of ethyl acetate extract was the most efficient in reducing variables for all species. Conclusions: The ethyl acetate extract of H. reniformis presents inhibitory activity on the seeds of cress, lettuce, giant arrowhead and barnyard grass, but this activity was dependent on the concentration of the extract and the species studied. H. reniformis synthesizes compounds with phytotoxic activity and purification of extracts is required to isolate, identify and characterize the action mechanism of the compounds with herbicide activity, so that in the future these can be used as models for the development of herbicides. SBCPD | Planta Daninha Perboni LT, et al. Herbicidal activity of kidney leaf mud plantain extracts Planta Daninha 2020;38:e020229957 https://doi.org/10.1590/S0100-83582020380100061 2/10

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.