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A first record of Pestalotiopsis clavispora in Argan mass cutting propagation: Prevalence, prevention and consequences for plant production

机译:argan大规模扦插繁殖中的pestalotiopsis clavispora的第一个记录:植物生产的普遍性,预防和后果

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摘要

A trial involving the mass propagation of Argania spinosa cuttings was established following two protocols: in mini-bouturathèques without mist and in a greenhouse under mist. Symptoms of petiole necrosis, foliar yellowing and abundant black acervuli were observed under both protocols. These symptoms were responsible for a 90% mortality rate in the mini-bouturathèques while under the mist treatment premature fatal necrosis of the apical buds resulted in 100% mortality. The disease’s causal agent, Pestalotiopsis clavispora, was identified on the basis of its morphological characteristics and by molecular analysis. Alternating weekly treatments of systemic and contact fungicides resulted in a 41% success rate in controlling this pathogen, described for the first time on argan cuttings.
机译:遵循以下两个协议建立了一项涉及Argania spinosa插条大规模繁殖的试验:在无雾的小型花椰菜中和在有雾的温室中。在两种方案下均观察到叶柄坏死,叶面发黄和大量黑色子宫颈的症状。这些症状导致小型胸足类动物的死亡率达到90%,而在薄雾处理下,顶芽的致命性坏死导致100%的死亡率。根据该病的形态特征和分子分析,确定了该病的病原体克氏梭菌(Pestalotiopsis clavispora)。每周交替使用系统性杀菌剂和接触性杀菌剂导致控制这种病原体的成功率达到41%,这是首次在Argan s插上进行描述的。

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