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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: 1980-5098
Vol. 26, No. 4, 2016, pp. 1119-1131
Bioline Code: cf16097
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 26, No. 4, 2016, pp. 1119-1131

 en SANITARY AND PHYSIOLOGICAL QUALITY, METHODS OF DETECTION AND TREATMENT OF SEEDS OF PEACH PALM
Junior, José Carlos da Costa; dos Santos, Alvaro Figueredo; Franciscon, Luziane; da Silva, Cleiltan Novais & Tessmann, Dauri José

Abstract

Basal stem rotting (BSR), caused by Fusarium spp., has been observed in peach palm (Bactris gasipaes Kunth. var. gasipaes Henderson) plantations in Brazil since 2000. The disease is a limiting factor to peach palm farming, damaging plants of different ages. The pathogen presence has been verified in seeds. The objectives of this study were: to evaluate the sanitary and physiological quality of eight commercial lots of peach palm seeds from Porto Velho, state of Rondonia, in Brazil; to compare two detection methods for Fusarium spp. in peach palm seeds; to evaluate pathogenicity and to compare aggressiveness of Fusarium spp. isolates from peach palm seeds; and to evaluate the chemical treatment of two peach palm seed lots for controlling Fusarium spp., about their effects on: a) sanitary effect; b) germination and vigor. The Fusarium spp. pathogenic may be transmitted by seeds to seedlings causing BSR disease. The paperboard methodology for Fusarium spp. detection proved to be more efficient for recovering this pathogen in peach palm seeds. The Chlorothalonil + Thiophanate Methyl and Thiophanate Methyl fungicides achieved the effective control over the target pathogen Fusarium spp. in peach palm seeds. Fusarium oxysporum and Fusarium proliferatum isolated from seed and seedling, respectively, were pathogenic to peach palm.

Keywords
peach palm; plant pathology; seed pathology

 
 pt QUALIDADE SANITÁRIA E FISIOLÓGICA, MÉTODOS DE DETECÇÃO DE Fusarium check for this species in other resources spp. E TRATAMENTO DE SEMENTES DE PUPUNHEIRA
Junior, José Carlos da Costa; dos Santos, Alvaro Figueredo; Franciscon, Luziane; da Silva, Cleiltan Novais & Tessmann, Dauri José

Resumo

Desde o ano 2000 é verificada a ocorrência da doença podridão da base do estipe (PBE), causada por Fusarium check for this species in other resources spp., em plantios de pupunheira ( Bactris gasipaes Kunth. var. gasipaes check for this species in other resources Henderson). A PBE pode se tornar limitante para o cultivo da pupunheira, ocorrendo em plantas com diferentes idades. Temse verificado a presença do patógeno em sementes. Os objetivos deste trabalho foram: avaliar a qualidade sanitária e fisiológica de oito lotes comerciais de sementes de pupunheira provenientes da região de Porto Velho - RO; avaliar dois métodos de detecção de Fusarium spp. em sementes; avaliar a patogenicidade e agressividade de isolados de Fusarium spp. obtidos de sementes ; avaliar o tratamento químico de dois lotes de sementes de pupunheira para o controle de Fusarium spp. Houve grande variação entre os lotes de sementes de pupunheira quanto à germinação, vigor e emergência de plântulas. Fusarium spp. pode ser transmitido das sementes para plântulas causando a doença PBE. A metodologia do papel-cartão para detecção de Fusarium spp. mostrou-se mais eficaz na recuperação deste patógeno em sementes de pupunheira. Os fungicidas tiofanato metílico+clorotalonil e tiofanato metílico controlaram Fusarium spp. em sementes de pupunheira. Fusarium oxysporum check for this species in other resources e Fusarium proliferatum check for this species in other resources , isolados de semente e plântula, respectivamente, foram patogênicos à pupunheira.

Palavras-chave
palmito de pupunha; fitopatologia; patologia de sementes

 
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