Reação à Bipolaris maydis, agente causal da mancha foliar, em híbridos apomíticos de Panicum maximum

Marcos, M. F.; Jank, Liana; Fernandes, C. D.; Verzignassi, J. R.; Mallmann, Guilherme; Queiróz, Carolina de Arruda; Batista, M. V.

doi:10.1590/0100-5405/2078

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…In seeds of P. maximum and Brachiaria spp., researchers have detected potentially pathogenic fungi such as the genera Curvularia, Fusarium, Phoma, Exserohilum, Cercospora and Helminthosporium, besides others, such as Alternaria, Aspergillus, Cladosporium, Epicoccum, Nigrospora, Penicillium and Trichoderma, (Marchi et al, 2010;Martinez et al, 2010;Mallmann et al, 2013;Marcos et al, 2015). These seeds can be a vehicle of dispersion of pathogens between regions (Vechiato et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Processing on the sanitary quality of seeds of Panicum maximum cv. ‘Tanzânia’

Melo

Silva

Panizzi

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aim of this study was to evaluate the sanitary quality of seeds of Panicum maximum cv. 'Tanzânia' , following the several phases of the seed processing process. Seeds were sampled before processing and after leaving the air and screen machine (upper and intermediary screens and bottom); first gravity table (drift, upper and intermediate spouts); second gravity table (upper, intermediate, and lower spouts), and treating machine for dyeing the seeds. The sanitary analyses were conducted according to the filter paper method, with and without superficial disinfestation of the seeds, which were incubated at a temperature of 20 ± 2 °C with photoperiod of 12 h for seven days. Some seed processing steps may reduce the incidence of seeds of P. maximum cv. 'Tanzania' contaminated with Phoma sp. and Helminthosporium sp. In general, the processing can increase the incidence of seeds contaminated with Cladosporium sp. and Cercospora sp. The fungi Phoma sp., Helminthosporium sp., Penicillium sp., Cladosporium sp. and Cercospora sp. are found inside and outside the seeds and can be disseminated by the processing machines.Beneficiamento na qualidade sanitária de sementes de Panicum maximum cv. Tanzânia R E S U M OObjetivou-se, neste trabalho, avaliar a qualidade sanitária de sementes de Panicum maximum cv. Tanzânia durante as etapas de beneficiamento. As sementes foram amostradas antes do processamento e após a saída da máquina de ventilador e peneiras (descarga das peneiras superior, intermediária e fundo), primeira mesa gravitacional (deriva, descarga superior e intermediária), mesa gravitacional (descarga superior, intermediária e inferior) e máquina tratadora para tingimento das sementes. A análise sanitária foi realizada pelo método do papel de filtro com e sem desinfestação superficial das sementes, as quais foram incubadas a 20 ± 2 °C, com fotoperíodo de 12 h durante sete dias. Algumas etapas de beneficiamento podem reduzir a porcentagem de sementes de P. maximum cv. Tanzânia contaminadas com Phoma sp. e Helminthosporium sp. Em geral, o beneficiamento pode aumentar a porcentagem de sementes com Cladosporium sp. e Cercospora sp. Os fungos Phoma sp., Helminthosporium sp., Penicillium sp., Cladosporium sp. e Cercospora sp. se encontram alojados nas sementes interna e externamente e podem ser disseminados pelas máquinas de beneficiamento.

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Section: Introductionmentioning

confidence: 99%

Processing on the sanitary quality of seeds of Panicum maximum cv. ‘Tanzânia’

Melo

Silva

Panizzi

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…Among the accessions of P. notatum, it was observed that the PN 04 access was more susceptible than the PN 01 access, presenting a greater number of species of fungi. Some important and potentially pathogenic fungi have been detected in the seeds of Panincum maximum and Brachiaria spp., such as Curvularia, Phoma, Fusarium, Exserohilum, Cercospora, Fusarium, Cladosporium and Helminthosporium (Mallmann et al, 2013;Marcos et al, 2015;Silva at al., 2019). The species of phytopathogenic fungi most frequent in seed lots of Paspalum guenoarum ecotype "Azulão" were Bipolaris micropus, Curvularia geniculata, Fusarium incarnatum and Phoma herbarum (Gasparetto et al 2017).…”

Section: Resultsmentioning

confidence: 99%

Sanitary quality of seed of Paspalum species

et al. 2020

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Brazil has been developing research for selection of native species of Paspalum for use as turfgrass, nevertheless little is known about the sanitary quality and pathogens associated to the seeds, being the aims of this study. Subsamples of 100 seeds of two accessions of Paspalum notatum Flügge (PN 01 and PN 04) and one accesses of Paspalum lepton Schult. (PL 01) were submitted to the blotter test at 20 °C with a 12-h photoperiod for 7 days. The Penicillium and Curvularia genus incidence were highest in the three accessions of Paspalum. The seed health quality was variable between accessions, with more than 56% of incidence of the fungus Curvularia on the seeds. This study reported for the first time the occurrence of Curvularia spp. and Cladosporium herbarium in seeds of P. lepton, in the Northeast region of Brazil.

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“…A mancha foliar é a principal doença que acomete a espécie Panicum maximum syn. Megathyrsus maximus, causada pelo fungo Bipolaris maydis (MARCOS et al, 2015).…”

Section: Principais Fungos Em Forrageirasunclassified