2005
DOI: 10.1590/s0101-31222005000100015
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Características físicas do pericarpo de sementes de milho associadas com a tolerância à alta temperatura de secagem

Abstract: Diferenças na tolerância das sementes de milho à alta temperatura de secagem têm sido relacionadas às características físicas do pericarpo. O objetivo desta pesquisa foi avaliar aspectos anatômicos do pericarpo de sementes de milho associados à tolerância das sementes a alta temperatura de secagem. Foram utilizadas sementes de híbridos simples e de seus híbridos simples recíprocos que apresentavam comportamento diferenciado quanto à tolerância aos danos por secagem. As sementes foram colhidas manualmente em es… Show more

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Cited by 8 publications
(5 citation statements)
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“…The loss of integrity of the pericarp can affect the electrical conductivity of the exudates released by the maize seeds. The same can also be observed in seeds that are submitted to a drastic drying process (José et al, 2005). No major differences were observed between the colonization of S. maydis and S. macrospora, but with S. macrospora it was verified that mycelium was more aerial on the seed surface or less adhered to the seeds and slightly thicker.…”
Section: Resultssupporting
confidence: 63%
“…The loss of integrity of the pericarp can affect the electrical conductivity of the exudates released by the maize seeds. The same can also be observed in seeds that are submitted to a drastic drying process (José et al, 2005). No major differences were observed between the colonization of S. maydis and S. macrospora, but with S. macrospora it was verified that mycelium was more aerial on the seed surface or less adhered to the seeds and slightly thicker.…”
Section: Resultssupporting
confidence: 63%
“…Its goal is to reduce the water content of the seeds to levels adequate to storage, preserving them from physical and chemical changes induced by excess water (RESENDE et al, 2012). However, because the removal of water during seed drying can cause chemical, physical and biological changes, the drying conditions must be monitored so that all possible effects on seed quality have to be considered (JOSÉ et al, 2005;ROSA et al, 2005).…”
Section: Introductionmentioning
confidence: 99%
“…Quando as sementes de mamona foram colhidas antecipadamente, com umidade média entre 25 e 30%, a elevação da temperatura de secagem à 60ºC prejudicou significativamente sua qualidade fisiológica. Sementes de milho que apresentam estrutura do pericarpo mais densa, formada por células mais compactadas, são mais sensíveis à alta temperatura de secagem (José et al, 2005), característica que pode ser estudada futuramente em mamona. Na cultivar Al Guarany 2002, verificou-se diferença de qualidade fisiológica entre as sementes colhidas antecipadamente e secadas à 40ºC, com as sementes mantidas no campo e secadas naturalmente na planta mãe (Tabela 02).…”
Section: Resultsunclassified