Caracterização da variabilidade genética de Euterpe Edulis (Arecaceae) do Espírito Santo para a produção de frutos

• Ano de defesa: 2018
• Autor(a) principal: Pereira, Pedro Mazzocco
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Doutorado em Biologia Vegetal; UFES; Programa de Pós-Graduação em Biologia Vegetal
• Palavras-chave em Português: Selection; Correlations; Genetic diversity; Juçara pulp; Correlações; Diversidade genética; Seleção; Polpa; Euterpe - Espírito Santo (Estado); Plantas x Variação; Genética vegetal x Seleção; Palmiteiro-juçara; Palmeira juçara; Agronomia; 57
• Link de acesso: http://repositorio.ufes.br/handle/10/10039

The objective of this work was to characterize the genetic variability and to select genotypes of the juçara palm (Euterpe edulis Martius) promising for the production of fruits for pulp. A total of 10,200 fruits were collected and 102 plants were sampled in nine populations in the North, Northeast and Center Mountainous Regions of the State of Espírito Santo. In all, twelve descriptors related to pulp production were used and the descriptive variance components were estimated by the maximum likelihood restricted method and the prediction of the phenotypic and genotypic values by the best non-biased linear prediction using Selegen-REML / BLUP. By means of predicted genotypic values and the use of seven microsatellite loci, it was possible to characterize the genetic variability of the juçara palm among genotypes and populations. Moderate levels of differentiation were found among populations and populations showed high intrapopulational and low interpopulational genetic diversity. The values found for the FST pairs show that the SL population does not have gene flow with the other populations and that geographically distant populations are not always genetically distant populations. The agglomerative methods used in this study from the predicted genetic values were concordant and identified in the populations three distinct groups, the SL population being the most isolated from the others. The analysis of the trail using twelve descriptors showed that to select genotypes with high yield of pulp (main variable), one should select: lower seed mass (DM), lower mass of one hundred seeds (MCS) and larger equatorial diameter of the fruit (DEF). With the selection index Mulamba and Monkey, it was possible to select 20 more promising genotypes for the production of pulp and the possible genotypes to be used in future crosses in the breeding programs of the juçara palm tree in Brazil. The results of this research have an important contribution with genetic information that help in the forest management, the conservation of the species and in breeding programs with a view to the sustainable exploitation of the fruits of the juçara palm for the production of pulp.