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首页> 外文期刊>Plant Pathology >THE PATTERN OF FUNGAL CONTAMINATION OF THE BANANA BUNCH DURING ITS DEVELOPMENT AND POTENTIAL INFLUENCE ON INCIDENCE OF CROWN-ROT AND ANTHRACNOSE DISEASES
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THE PATTERN OF FUNGAL CONTAMINATION OF THE BANANA BUNCH DURING ITS DEVELOPMENT AND POTENTIAL INFLUENCE ON INCIDENCE OF CROWN-ROT AND ANTHRACNOSE DISEASES

机译:香蕉菌在其发育过程中的真菌污染模式及其对冠腐病和炭疽病发病的潜在影响

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摘要

Anthracnose and crown rot are the main diseases affecting bananas after harvest. These diseases are mainly caused by Colletotrichum musae (anthracnose) and to some extent by various Fusarium species forming a fungal complex (crown rot). A water-borne spare trap was used to collect and quantify all inocula reaching banana bunches from flowering to harvest. The pattern of natural contamination was characterized by a peak from 25 to 40 days after bunch emergence, with a strong decline until harvest. Both Colletotrichum and Fusarium species had the same dynamics during bunch growth. Flower parts are the main inoculum source for Fusarium; both flower parts and the last bunch bract are important sources for Colletotrichum. Primary inoculum could reach flower parts and the last bunch bract through rain splash of conidia, transport by insects or aerial dissemination of ascospores. Sporulation occurring on the young flower parts and on the last bunch bract provides heavy secondary inoculum. The consequences for control strategies are discussed.
机译:炭疽病和冠腐病是影响香蕉收获后的主要病害。这些疾病主要是由炭疽菌引起的(炭疽病),在某种程度上是由形成真菌复合物(冠腐病)的各种镰刀菌引起的。使用水上备用捕集阱来收集和定量所有从开花到收获的到达香蕉串的接种物。自然污染的特征是束发后25到40天达到峰值,直到收获前下降幅度很大。炭疽菌和镰刀菌在束生过程中具有相同的动力学。花部分是镰刀菌的主要接种源。花的部分和最后一束act片都是炭疽菌的重要来源。初生接种物可通过分生孢子的雨水喷溅,昆虫运输或子囊孢子的空中传播而到达花的部分和最后一束片。发生在幼花部分和最后一束片上的孢子形成提供了沉重的次生接种物。讨论了控制策略的后果。

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