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首页> 美国卫生研究院文献>Plants >Preliminary Investigation of Effect of Neem-Derived Pesticides on Plasmopara halstedii Pathotype 704 in Sunflower under In Vitro and In Vivo Conditions
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Preliminary Investigation of Effect of Neem-Derived Pesticides on Plasmopara halstedii Pathotype 704 in Sunflower under In Vitro and In Vivo Conditions

机译：印Ne来源的农药在体外和体内条件下对向日葵Palmomo halstedii 704型致病性影响的初步研究

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摘要

Two neem-derived pesticides were examined under and conditions to test their efficacy in controlling pathotype 704, a causal agent of downy mildew in sunflower. All the tested concentrations of neem leaf extract and the highest concentration of commercial neem product significantly reduced the sporangial germination under conditions. In experiment, 3-days old pre-treated seedlings with both concentrations of neem leaf extract and the highest concentration of commercial product showed a significant reduction in the infection indicating possible systemic effect of neem. When the seedlings were treated following the infection with (i.e., post-treatment), only the highest concentrations of neem leaf extract and the commercial product showed a significant reduction in the infection indicating curative effect of neem. Possibilities for the control of with neem-derived pesticides are discussed.
机译：在和条件下检查了两种印ne来源的农药，以测试其在控制病原体704中的功效，该病原体是向日葵霜霉病的病因。在一定条件下，所有测试浓度的印em叶提取物和最高浓度的商业印em产品均显着降低了孢子囊萌发。在实验中，3天龄的预处理幼苗同时含有浓度的印ne叶提取物和最高浓度的商品，显示出感染的明显减少，表明印em可能具有全身作用。当感染后（即后处理）处理幼苗时，仅最高浓度的印ne叶提取物和市售产品显示出感染的显着降低，表明印em的疗效。讨论了控制印ne衍生农药的可能性。

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