Electrophoresis of proteins from several races of Ditylenchus dipsaci,recovered from dried infested courgette tissue.

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Uso de tratamentos termicos na erradicacao de Aphelenchoides besseyi em sementes de Brachiaria dictyoneura.

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Fitonematóides associados à gravioleira (Annona muricata) no sul da Bahia Phytonematodes associated to soursop tree (Aannona muricata) in the south of Bahia

Nematóides têm sido reportados, em alguns Estados do Brasil, causando danos à gravioleira (Annona muricata L.). No sul da Bahia, o cultivo da graviola é bastante recente; portanto, há carência de informações sobre os problemas fitossanitários. O presente estudo teve como objetivo o levantamento dos fitonematóides associados a gravioleiras dos municípios de Una e Ilhéus, sul da Bahia (BA). Subamostras de solo e raízes de 10 diferentes plantas foram coletadas, ao acaso, e misturadas para formar uma amostra composta representativa de cada pomar. As análises nematológicas foram realizadas nos Laboratórios de Fitopatologia e Nematologia da Universidade Estadual de Santa Cruz (UESC), Ilhéus-BA, e Universidade Federal de Viçosa (UFV), Viçosa-MG. Os nematóides encontrados associados à gravioleira foram: Aphelenchoides sp., Aphelenchus sp., Helicotylenchus sp., Mesocriconema sp., Rotylenchus sp., Rotylenchulus sp. e Tylenchus sp. Futuramente, serão conduzidos estudos para avaliar a patogenicidade desses nematóides à gravioleira.<br>Nematodes have been reported in some States of Brazil causing damage to soursop (Annona muricata L.). In the South of Bahia, the soursop growing is very recent; therefore there is a lack of information regarding its phytosanitary problems. The present study aimed the survey of plant nematodes associated with soursop in the municipal district of Una and Ilhéus, South of Bahia (BA). Soil and root subsamples from 10 distinct soursop plants were randomly collected and mixed to form a representative composite sample of each orchard. The nematodes analyses were carried out in the Laboratories of Plant Pathology and Nematology of the University of Ilhéus, BA (UESC) and Viçosa, MG (UFV). The nematodes found associated with soursop were: Aphelenchoides sp., Aphelenchus sp., Helicotylenchus spp., Mesocriconema spp., Rotylenchus sp., Rotylenchulus sp. and Tylenchus sp. Future studies will be conducted to evaluate the pathogenicity of these nematodes to soursop