Suppression of Botrytis cinerea sporulation by Clonostachys rosea on rose debris:: a valuable component in Botrytis blight management in commercial greenhouses
Suppression of Botrytis cinerea sporulation by Clonostachys rosea on rose debris:: a valuable component in Botrytis blight management in commercial greenhouses
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DOI：
10.1016/s1049-9644(02)00134-2
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发表时间：
2003-03-01
影响因子：
4.2
通讯作者：
Barbosa, JG
中科院分区：
文献类型：
--
作者：
Morandi, MAB;Maffia, LA;Barbosa, JG
葡萄枯萎病（Botrytis cinerea, Bc）是巴西塑料大棚玫瑰的重要病害。在作物叶片和秸秆上施用蔷薇花孢菌（Clonostachys rosea, Cr）以减少病原菌的产孢，可以作为其他防治措施的补充。在一个塑料温室里进行了两项实验，每一项都是用一种玫瑰品种进行的。对于“红色成功”，比较了四种处理：(1)对照；(2)每两周喷Cr；(3)每周喷施代森锰锌；(4)每周喷洒铬或代森锰锌到植株的下三分之一处和残骸上。对于“索尼娅”，治疗不包括在内。每隔10天（15天）从碎片（叶片和花瓣）中提取样品，并在PCA培养基上镀。测定了真菌的产孢量和芽孢枯萎病的发病率。C处理显著（P = 0.05）降低了两个品种的Bc孢子量。然而，疾病发病率并没有持续下降，这可能是由于在白腐病流行较早的时候开始施用玫瑰红孢杆菌，并且在未处理的地块上没有进行卫生措施。从目前和以前的研究来看，在垃圾上持续施用铬，与卫生习惯有关，有可能减少芽孢杆菌的产孢和疾病发病率。(C) 2002 Elsevier Science （USA）。版权所有。
Botrytis blight, caused by Botrytis cinerea (Bc), is an important disease on roses grown in plastic greenhouses in Brazil. Biocontrol with Clonostachys rosea (Cr) applied to leaves and crop debris to reduce pathogen sporulation can complement other control measures for disease management. Two experiments, each with a rose cultivar, were conducted in a plastic greenhouse. For 'Red Success,' four treatments were compared: (1) control; (2) fortnightly sprays of Cr; (3) weekly sprays of mancozeb; and (4) weekly sprays of either Cr or mancozeb to the lower third of the plants and the debris. For 'Sonia,' treatment 4 was not included. Samples were taken from debris (leaves and petals) at ten 15-day intervals and plated on PCA medium. Sporulation of fungi and incidence of Botrytis blight on buds were assessed. For both cultivars, C treatments significantly (P = 0.05) reduced Bc sporulation. However, disease incidence was not consistently reduced, probably because the applications of C. rosea started when Botrytis blight epidemic was advanced and no sanitation practices were performed on nontreated plots. From the present and previous studies, continuous application of Cr on debris, associated with sanitation practices, has the potential to reduce Bc sporulation and disease incidence in the buds. (C) 2002 Elsevier Science (USA). All rights reserved.