Composição química e qualidade de sementes de variedades crioulas de milho no armazenamento

• Autor(a) principal: Stefanello, Raquel
• Data de Publicação: 2014
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Manancial - Repositório Digital da UFSM
• dARK ID: ark:/26339/0013000016smk
• Texto Completo: http://repositorio.ufsm.br/handle/1/3220
• topic: Zea mays L.; Germinação; Sanidade; Composição química; Armazenamento; Germination; Sanity; Chemical composition; Storage; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

Preserving landrace maize seeds variety has a cultural and biodiversity relevance. Besides, genetic variability conservation of landrace maize seeds has a purpose on sustainability of the familiar growers activity. Thereby the aim of this study was to characterize different landrace maize seeds concerning about seeds quality, to determine chemical composition as well and the relationship between physiology quality and chemical composition on storage. The analyses included germination percentage, first count germination, cold test accelerated aging test, sanity and chemical composition. The entirely randomized experimental design and a factorial 2x4 (condition x storage periods) were used for these tests. As a conclusion the varieties Oito Carreiras, Cabo Roxo and Lombo Baio had decreased on the physiology quality during the storage. The seeds behavior during the storage was different depending on variety and packaging used. The main fungus fond out on maize seeds during nine months of storage were Aspergillus, Fusarium and Penicillium genders that caused deterioration and reduction of physiological quality. The content of protein, lipid and fatty saturated acids with reduced storage and chemical composition of the seeds did not vary with the storage condition.