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首页> 外文期刊>Acta Horticulturae >Effect of Heliopsis longipes Extract in Tolerance Response of Tomato Plants Inoculated with Fusarium oxysporum f. sp. lycopersici
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Effect of Heliopsis longipes Extract in Tolerance Response of Tomato Plants Inoculated with Fusarium oxysporum f. sp. lycopersici

机译：葵花提取物对番茄枯萎病菌耐受性的影响sp。 lycopersici

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摘要

The root of Heliopsis longipes is rich in alkamide molecules, specifically affinin, which could act as an elicitor in plants. The objective of this work was to determine the concentration of key metabolites in the induction of resistance in tomato seedlings sprayed with H. longipes extract and inoculated with Fusarium oxysporum f. sp. lycopersici (FOL). The experiment was performed with tomato plants (5 to 6 true leaves) of the cultivar 'Rio Grande' potted in a mixture of peatmoss:perlite (70:30). Aconcentrated ethanol extract of H. longipes with a 300 ppm concentration of affinin was applied to tomato foliage. Plants were inoculated with FOL by immersing the roots in spore solution four days after being treated with the extract. Twenty days afterinoculation, the severity of disease symptoms was reduced by 70% on plants sprayed with the H. longipes extract. Plants sprayed with H. longipes extract displayed an increase of 4.04 times in PAL, 2.36 times in p-l,3-glucanase and 2.07 times in chitinasethe greatest enzymatic activity was observed after 12 h of application of the extract.
机译：长尾葵的根含有丰富的烷酰胺分子，特别是亲和素，可以在植物中充当引发剂。这项工作的目的是确定喷洒长双歧提取物和接种尖孢镰刀菌f的番茄幼苗在诱导抗性中关键代谢产物的浓度。 sp。 lycopersici（FOL）。实验是用番茄泥（Rio Grande）的番茄植物（5至6个真叶）在泥炭：珍珠岩（70:30）的混合物中盆栽。将浓度为300 ppm的Affinin的浓缩长双歧乙醇提取物应用于番茄叶片。在用提取物处理四天后，通过将根浸入孢子溶液中，用FOL接种植物。接种后二十天，喷洒长双歧杆菌提取物的植物的病状严重程度降低了70％。喷施长足双歧提取物的植物在PAL中显示出4.04倍的增长，在p-1,3-葡聚糖酶中显示2.36倍的增长，在几丁质酶中显示2.07倍的增长，施用提取物12小时后观察到最大的酶活性。

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