Tratamento fungicida em semente de milho super-doce

Ramos, N. P.; Filho, Júlio Marcos; Galli, Juliana Altafin

doi:10.1590/s0101-31222008000100004

Cited by 5 publications

(7 citation statements)

References 8 publications

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“…As empresas produtoras têm incluído esses testes em programas internos de controle para garantir a qualidade das sementes destinadas à comercialização. Vários testes têm sido conduzidos para a determinação do vigor de sementes de milho superdoce, destacando-se os de envelhecimento acelerado, frio, condutividade elétrica, primeira contagem de germinação e emergência de plântulas em campo (Guiscem et al, 2002;Santos et al, 2002;Ramos et al, 2008). Um dos métodos mais importantes para a avaliação do vigor de sementes consiste na determinação da velocidade e uniformidade de crescimento (Hoffmaster et al, 2003).…”

Section: Introductionunclassified

“…Posteriormente, Sako et al (2001) desenvolveram um sistema automatizado para avaliação do vigor de sementes de alface, denominado Seed Vigor Imaging System (SVIS ® ), o qual gera valores referentes ao índice de vigor (valores de 0 a 1000, diretamente proporcionais ao vigor), uniformidade de desenvolvimento (também de 0 a 1000) e comprimento de plântulas. Este sistema também tem demonstrado eficiência na avaliação do potencial fisiológico de sementes de outras espécies, como soja (Hoffmaster et al, 2003;Hoffmaster et al, 2005;Marcos-Filho et al, 2009), milho (Hoffmaster et al, 2005;Otoni e McDonald, 2005), melão (Marcos-Filho et al, 2006) e feijão (Gomes Junior e Chamma, 2008), sendo sua utilização estendida para a avaliação da eficiência do condicionamento fisiológico de sementes de milho doce (Gomes Junior et al, 2009).…”

Section: Introductionunclassified

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Avaliação do vigor de sementes de milho superdoce por meio da análise computadorizada de imagens de plântulas

Alvarenga¹,

Filho²,

Gomes³

2012

Rev. bras. sementes

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RESUMO -O presente trabalho foi conduzido com o objetivo de verificar a eficiência do sistema computadorizado de avaliação do vigor de sementes (SVIS ® ), em comparação com outros procedimentos disponíveis, em sementes de milho superdoce. Foram utilizadas sementes dos híbridos SWB 551 e SWB 585, cada uma representada por cinco lotes, conduzindo-se testes de germinação, envelhecimento acelerado (tradicional e com solução saturada de NaCl) e emergência de plântulas em campo. Para a determinação do vigor das sementes por meio do SVIS ® , as plântulas foram avaliadas aos três dias após a semeadura do teste de germinação, sendo obtidos dados referentes ao índice de vigor, à uniformidade de desenvolvimento e ao comprimento de plântulas. Para ambos os híbridos avaliados, os resultados fornecidos pelo SVIS ® foram coerentes com os do teste de envelhecimento acelerado tradicional. Concluiu-se que o SVIS ® é eficiente para avaliação do vigor de sementes de milho superdoce, constituindo alternativa viável para a determinação do potencial fisiológico.Termos para indexação: Zea mays L., potencial fisiológico, análise de sementes.Evaluation of supersweet corn seed vigor using an automated computer imaging system ABSTRACT -The objective of this study was to verify the efficiency of an automated system for seedling evaluation (SVIS ® ) to assess supersweet corn seed vigor compared to information from accepted vigor tests. Five seed lots, each of the SWB 551 and SWB 585 hybrids, were subjected to germination, accelerated aging (traditional and saturated salt) and field seedling emergence tests. The Seed Vigor Imaging System (SVIS ® ) parameters comprised mean seedling growth, uniformity and a vigor index, computed in scanned images of three-day old seedlings from the germination test. The results for both hybrids provided by SVIS ® were comparable to those from the traditional accelerated aging test, thus demonstrating an efficient vigor evaluation of supersweet corn seeds.

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Section: Introductionunclassified

Avaliação do vigor de sementes de milho superdoce por meio da análise computadorizada de imagens de plântulas

Alvarenga¹,

Filho²,

Gomes³

2012

Rev. bras. sementes

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“…This fact can be explained by the insecticide effect on the maize seeds vigor and germination stored for a long period (Salgado andXimenes 2013, Tonin et al 2014) and possibly because they do not have fungicide active ingredients. Both treatments may have been influenced by the seeds pathogens degradation, as fungicides work to control the main maize seeds fungi (Govender et al 2008, Ramos et al 2008.…”

Section: Resultsmentioning

confidence: 99%

“…The application uniformity over a short period of time, low material cost and the fact that no additional energy is required for drying, makes liquid seed treatment widely used for most grown crops (Murphy 2017). The seeds chemical treatment with fungicides favors to keep the vigor, especially for maize seeds, since they are efficient to control the main storage grain fungi, especially when the seeds present low physiological quality, such as germination and vigor (Govender et al 2008, Pereira et al 2008, Ramos et al 2008.…”

mentioning

confidence: 99%

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Frandoloso¹,

Galon²,

Menegat³

et al. 2018

Commun. Plant Sci.

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The seeds physiological quality is a fundamental characteristic to obtain competitive and productive plants, where seeds treatment is an important tool to keep seeds physiological high-quality. The present study aimed to evaluate chemical treatments and storage period influence on seeds physiological quality. It was used a factorial (4 x12) randomized complete block design, with eight replications. In factor A, the chemicals (thiamethoxam, metalaxyl + fludioxonil + thiabendazole and pyraclostrobin + thiophanate-methyl + fipronil) and control. In the factor B, the treated seeds storage periods (0, 3, 7, 14, 21, 28, 35, 42, 49, 56, 63 and 90 days). The variables evaluated were vigor and germination, and the tests were performed at p≤0.05. The results indicate that the maize seeds vigor is maintained with the fungicide application, regardless of the vigor test used. As the treated seeds storage period increases, their vigor was reduced by the first count test. However, maize seeds germination was not influenced by seed treatment or storage period. Highlighted Conclusions 1) The maize seeds vigor is maintained applying fungicides, regardless of the vigor test used. 2) The first count test indicates that the longer the untreated or treated maize seeds with thiamethoxam are stored the lower the seed vigor. 3) Maize seeds germination is not influenced by the thiamethoxam, metalaxyl + fludioxonil + thiabendazole and pyraclostrobin + thiophanate-methyl + fipronil chemicals, not even by the storage period up to 90 days of treated seeds.

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“…Several studies reported the beneficial effect of fungicide treatment on seed quality (Pereira, Oliveira, Rosa, Oliveira, & Costa Neto, 2009;Pereira et al, 2011;Silva, Lucca Filho, Zimmer, & Bonini Filho, 2011;Hossen, Corrêa Junior, Guimarães, Nunes, & Galon, 2014). Ramos, Marcos Filho, and Galli (2008) working with supersweet corn, observed that fungicide treatment improved seed vigor under accelerated aging conditions. Pereira et al (2011) found that treatment of soybean seeds with fungicide increased seedling emergence by 44.3%, confirming the importance of controlling naturally occurring pathogens in seeds even under optimal germination conditions.…”

Section: Discussionmentioning

confidence: 99%

Combined Effects of Biological and Chemical Treatment on Rice Seed Physiological and Sanitary Quality

Pereira¹,

Benites²,

Catelan³

et al. 2019

JAS

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This study aimed to evaluate the efficiency of integrated biological and chemical control of pathogens in rice seeds and their effects on seed quality. The experiment was conducted in a 2 × 5 factorial completely randomized design. Fungicide-treated (carboxin/thiram) and untreated rice seeds were inoculated with distilled water (control), Azospirillum brasilense, Bacillus subtilis, Pseudomonas fluorescens, or Trichoderma harzianum. Seed vigor and viability, shoot and root length, and seedling dry weight were determined. The blotter test was carried out to assess seed health. Fungicide treatment improved seed vigor and viability and reduced the incidence of fungi. Biological treatment did not enhance the physiological quality of seeds but was able to control fungi. A. brasilense, B. subtilis, P. fluorescens, and T. harzianum controlled Phoma sorghina; B. subtilis, P. fluorescens, and T. harzianum were effective against Aspergillus flavus; P. fluorescens and T. harzianum controlled Pyricularia oryzae; and T. harzianum was effective against Gerlachia oryzae.

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Tratamento fungicida em semente de milho super-doce

Cited by 5 publications

References 8 publications

Avaliação do vigor de sementes de milho superdoce por meio da análise computadorizada de imagens de plântulas

Avaliação do vigor de sementes de milho superdoce por meio da análise computadorizada de imagens de plântulas

Chemical treatment and storage period influence on physiological characteristics of maize seeds

Combined Effects of Biological and Chemical Treatment on Rice Seed Physiological and Sanitary Quality

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