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| Casa,Ricardo Trezzi; Kuhnem Junior,Paulo Roberto; Bogo,Amauri; Belani,Ana Maria Munerati; Bolzan,Jonatha Marcel; Oliveira,Filipe Souza; Blum,Marta Maria Casa. |
| The fungus Alternaria alternata was quantified in 75 wheat seed samples collected from three different regions of southern Brazil for Cropping and Use Value (CUV) I, II and III. Fungal presence was evaluated in two hundred disinfested seeds per sample before sowing in a potato-dextrose-agar medium + antibiotic (PDA+A). Fungus survival was evaluated every 45 days for 180 days for three seed batches from six wheat cultivars stored in propylene bags in a storehouse, with air temperature varying between 18 to 22 °C and relative air humidity around 60%. The efficacy of carboxin+thiram, difenoconazol, thiram, triadimenol, triticonazol and triticonazol + iprodione fungicides to control A. alternata was determined. A. alternata was detected in all the samples with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungi; Seed health; Seed treatment; Triticum aestivum. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300001 |
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| Santos Neto,Antônio Lucrécio dos; Carvalho,Maria Laene Moreira de; Oliveira,João Almir; Fraga,Antônio Carlos; Souza,Ademária Aparecida de. |
| Castor bean fruits are already used for biodiesel production but obtaining quality seeds is still a challenge. Seed cleaning improves lot quality but little is known about the effects of upgrading castor bean seed lots on a densimetric table. The objective of this study was to evaluate the influence of cleaning castor bean seed lots on a densimetric table on their physical, physiological and sanitary characteristics. Two commercial lots of the AL Guarani 2002 cultivar, separated into five categories according to their classification on a densimetric table (uncleaned and low, low intermediate, high intermediate and high outlets), were evaluated. Tests for the yield, one-thousand seed weight, germination, seedling emergence, electrical conductivity and seed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ricinus communis L.; Cleaning; Germination; Vigor; Seed health. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400004 |
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| Silva,Tanismare Tatiana de Almeida; Guimarães,Renato Mendes; Pinho,Édila Vilela de Resende Von; Abreu,Luciana Aparecida de Souza. |
| The establishment of citrus orchards with rootstocks from seed with a low physiological quality has been a recurring problem. Low quality seeds directly affect both the final stand and the time required for seedling production. The irregular maturation of fruits, seed recalcitrance, and the high incidence of fungi, make long term storage difficult, even at low temperatures. This study evaluated the storage potential and the use of fungicide treatments on 'Swingle' citrumelo seeds extracted from fruits collected at two maturation stages, green or ripe. The seeds were subjected to a thermal treatment, treated with Derosal, Thiram or Tecto+Captan fungicides, packaged in impermeable polyethylene bags and stored in a cold chamber for nine months. Every three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 'Swingle' citrumelo; Physiology; Seed health; Conservation. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222011000400019 |
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