Caracteriza??o molecular (RAPD) e an?lise das prote?nas de reserva em gr?os de variedades locais de arroz do Maranh?o

• Autor(a) principal: Ara?jo, Elisangela Sousa de
• Data de Publicação: 2006
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
• Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/1235
• topic: DNA extaction; Protein extraction; Molecular markers; Extra??o de DNA; Extra??o de prote?nas; Marcadores moleculares; Agronomia

Brazil is the country with the greatest plant genetic diversity in the world with the potential still underestimated what makes it necessary to characterize local genetic material. Genetic resources are studie in several stages and identify traits of agronomic value in hardy varieties is one of the roles of gene banks (BAG's). In rice, because it is a very important crop for the diet of the brazilian population, selecting genotypes with high yield, nutritional value and adapted to the most diverse environmental conditions is a continuous search for improvement programs. In this sense, the present study aimed to adapt methodologies for protein extraction reserve and DNA of rice seeds to be used in routine laboratory for characterization of germplasm banks. After optimization of methodologies, seeds of twenty local varieties of rice grown in the state of Maranh?o different times (Experiment I: Aug-2002 to Mar-2003 and Experiment II: Nov-2002 to Jun-2003) were analyzed for study of diversity genetic (DNA and protein) and seasonality effect on its accumulation of reserves and gross protein. The analysis of variance or protein content and protein fractions was highly significant (P <0.01) between genotypes and experiments. The mean protein fractions albumin+globulin and glutelin were higher in experiment I, whose average temperatures were 330C while the average gross protein (CP) was higher than in Experiment II in which the average temperature was 410C.Varieties analyzed, the Pingo d? ?gua (220019) and Jatob? (220012) showed the highest values for PB (11.32 and 11.13%) and glutelin (83.73 and 92.86 mg flour). The molecular characterization by RAPD was based on 37 polymorphic band sand phylogenetic analysis revealed a genetic diversity at 50% training with four groups and three separate varieties. Groups based on the varieties named Lageado and Zebu branco seems to have been the shape of the grains and reason C/L.