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Evaluation of host resistance inducers and conventional products for fire blight management in loquat and quince

机译：host和木瓜抗宿主病诱导剂和常规产品评估火疫病

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Fire blight disease is one of the most destructive diseases of pome fruits. Due to the lack of effective, non-phytotoxic and publicly acceptable materials for controlling fire blight in pome fruit trees, new strategies to manage Erwinia amylovora fire blight are being sought. The resistance-inducing compounds prohexadione-Ca, harpin protein and benzothiadiazole (acibenzolar-S-methyl), the fertilizer humic acid, the bactericides streptomycin and copper salts, and combinations of copper with chemicals were evaluated for their ability to control fire blight on quince and loquat cultivars. Prohexadione-Ca was applied at a rate of 125 mg L-1 at two shoot lengths (6-12 cm and 15-20 cm), while benzothiadiazole + metalaxyl (135 mg L-1) and harpin (50 mg L-1) were applied when the shoots measured between 15-20 cm, and again at 30-35 cm. On loquat cv. Cukurgobek, benzothiadiazole + metalaxyl showed about 60% effectiveness. The addition of copper salts reduced the effectiveness of benzothiadiazole + metalaxyl. On quince cultivars, streptomycin (P <= 0.05) was the most effective treatment during both years, followed by the harpin protein alone and in combination with copper salts. Prohexadione-Ca, benzothiadiazole + metalaxyl, and harpin protein applications reduced disease severity on inoculated shoots compared with copper and untreated controls. Prohexadione-Ca reduced both shoot length and shoot blight on the two hosts. Humic acid applications were ineffective in controlling fire blight on loquat and quince cultivars. Quince cv. E me showed lower disease severity than cv. Ekmek (P <= 0.05). The use of resistance-inducing substances during the early phase of shoot growth may offer a means of managing the shoot blight phase of fire blight disease on quince and loquat.
机译：火疫病是石榴果实中最具破坏性的疾病之一。由于缺乏有效的物质来控制梨果树中的枯萎病，因此该方法正在寻求新的策略来控制桃蚜欧文氏菌的枯萎病。评估了诱导抗性的化合物原己二酮-Ca，harpin蛋白和苯并噻二唑（苯并噻唑-S-甲基），腐殖酸肥料，链霉素的杀菌剂和铜盐，以及铜与化学药品的结合物对木瓜火疫病的控制能力。和lo品种。前己二酮-Ca的施用量为125 mg L-1，分两种芽长（6-12 cm和15-20 cm），而苯并噻二唑+甲霜灵（135 mg L-1）和harpin（50 mg L-1）当芽长在15-20厘米之间，再在30-35厘米之间时，施用。在lo简历上。库库贝克，苯并噻二唑+甲霜灵显示约60％的有效性。铜盐的添加降低了苯并噻二唑+甲霜灵的有效性。在木瓜品种上，链霉素（P <= 0.05）是两年中最有效的治疗方法，其次是单独的harpin蛋白以及与铜盐结合的harpin蛋白。与铜和未经处理的对照相比，原己二酮-Ca，苯并噻二唑+甲霜灵和harpin蛋白的应用降低了接种芽上的病害严重程度。 Prohexadione-Ca减少了两个寄主的芽长和茎枯病。腐殖酸的施用不能有效地控制和木瓜品种的枯萎病。木瓜简历我的病情严重程度低于简历。 Ekmek（P <= 0.05）。在芽生长的早期使用诱导抗性的物质可能为管理木瓜和lo上火枯病疾病的枯萎病阶段提供一种手段。

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