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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 28, No. 3, 2018, pp. 970-978
Bioline Code: cf18089
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 28, No. 3, 2018, pp. 970-978

 en PATHOGENICITY AND TRANSMISSION OF FUNGI ASSOCIATED TO Tectona grandis check for this species in other resources L.f. SEEDS
Izabela Silva Sales, Nathana; Urzêdo Leão, Evelynne; Giongo, Marcos & Rodrigues dos Santos, Gil

Abstract

The production of teak seedlings is mainly carried out by seeds, which is an important vehicle for the transmission of various pathogens. The purpose of this study was to identify and quantify the fungi associated with teak seeds, the pathogenicity of these microrganisms to the seedlings and the seed-seedling transmission. There were used seeds collected in Tocantins state and others acquired in the states of Goias (GO) and in São Paulo (SP) for the sanity test. The treatments used were seeds disinfested and not disinfested, and seeds with and without mesocarp. The analysis was conducted using the paper filter method (Blotter test). To pathogenicity test in seedlings, were utilized the isolates of Fusarium check for this species in other resources sp., Botryodiplodia check for this species in other resources sp., Alternaria check for this species in other resources sp. and Plenodomus check for this species in other resources sp. To evaluate the fungal seedling-transmission were used seeds of each location.The following genera of fungi were identified in the seeds: Fusarium, Trichoderma check for this species in other resources , Botryodiplodia, Aspergillus check for this species in other resources , Penicillium check for this species in other resources , Rhizopus check for this species in other resources , Cladosporium check for this species in other resources , Alternaria and Plenodomus. A higher occurrence of fungi was observed in the seeds from the states of GO and SP. Fusarium was the fungal genera with the highest incidence in the seeds of the three states. Only the Fusarium and Botryodiplodia genera were pathogenic to teak seedlings. There was low seed-seedling transmission, with only the phytopathogenic genus Fusarium being transmitted.

Keywords
phytopathogens; seed health; seedling production

 
 pt PATOGENICIDADE E TRANSMISSÃO DE FUNGOS ASSOCIADOS ÀS SEMENTES DE Tectona grandis check for this species in other resources L.f.
Izabela Silva Sales, Nathana; Urzêdo Leão, Evelynne; Giongo, Marcos & Rodrigues dos Santos, Gil

Resumo

A produção de mudas de teca é realizada principalmente por sementes, que é um importante veículo de transmissão de diversos patógenos. Objetivou-se com este trabalho identificar e quantificar os fungos associados às sementes de teca, a patogenicidade desses microrganismos às mudas e a transmissibilidade semente-plântula. Para o teste de sanidade foram utilizadas sementes coletadas no estado do Tocantins e outras adquiridas nos estados do Goiás (GO) e São Paulo (SP). Os tratamentos utilizados foram sementes desinfestadas e não desinfestadas, e sementes com e sem mesocarpo. O ensaio foi conduzido utilizando o método do papel de filtro (Blotter test). Para o teste de patogenicidade em mudas, foram utilizados os isolados de Fusarium check for this species in other resources sp., Botryodiplodia check for this species in other resources sp., Alternaria check for this species in other resources sp. e Plenodomus check for this species in other resources sp. Para a avaliação da transmissão de fungos via semente-plântula foram utilizadas sementes de cada local. Foram identificados os seguintes gêneros de fungos nas sementes: Fusarium, Trichoderma check for this species in other resources , Botryodiplodia, Aspergillus check for this species in other resources , Penicillium check for this species in other resources , Rhizopus check for this species in other resources , Cladosporium check for this species in other resources , Alternaria e Plenodomus. Foi observada maior ocorrência de fungos nas sementes provenientes dos estados de GO e SP. Fusarium foi o gênero fúngico com maior incidência nas sementes dos três estados. Apenas os gêneros Fusarium e Botryodiplodia foram patogênicos às mudas de teca. Houve baixa transmissibilidade semente-plântula, sendo que apenas o gênero fitopatogênico Fusarium foi transmitido.

Palavras-chave
fitopatógenos; sanidade de sementes; produção de mudas

 
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