Caracterização morfoagronômica de acessos de Coffea arabica L

• Ano de defesa: 2009
• Autor(a) principal: Leão, André Pereira
• Orientador(a): Sakiyama, Ney Sussumu
• Banca de defesa: Caixeta, Eveline Teixeira , Leite, Roberto de Aquino
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Genética e Melhoramento
• Departamento: Genética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; Me
• País: BR
• Palavras-chave em Português: Coffea arabica; Banco de germoplasmas; Descritores mínimos; Análise multivariada; Café
• Palavras-chave em Inglês: Coffea arabica; Germplasm bank; Minimum descripton; Multivariate analysis; Coffee
• Área do conhecimento CNPq: CNPQ::CIENCIAS BIOLOGICAS::GENETICA
• Link de acesso: http://locus.ufv.br/handle/123456789/4724

One hundred accesses from the Coffea spp. germplasm bank of Universidade Federal de Viçosa were evaluated agronomic and morphologically, and separate in groups according to their genetic correlation. 21 descriptors of the IPGRI (International Plant Genetic Resources Institute) were used. After that, statistics analysis were done, indicating, by order, the following characteristics to discard, because of their minor importance to the genetic clustering: number of nodes in the branch, number of nodes in the main stem, color of the fruit, estimative of fruit production, branch length, crown diameter, leaf length, fruit maturation uniformity and stem length until the first node. Also, the descriptors leaf apex shape and leaf shape were discarded because it does not present variation on the evaluated accesses. Therefore, of the initial 21 characteristics, only 10 were kept by the end of the analysis. Using all the 21 descriptors, the 100 accesses were separate in 78 different genetic groups, 67 of it being singular. On the other hand, after discarding the less important variables, the remaining 10 characteristics allowed the formation of 10 genetic groups, only one being singular.