Divergência entre genótipos de café arábica para qualidade sensorial

• Autor(a) principal: Sobreira, Fabrício Moreira
• Data de Publicação: 2013
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/1233
• topic: Cafés especiais; Híbrido de Timor; Bourbon; Qualidade de bebida; Specialty coffees; Timor Hybrid; Bourbon; Quality of the beverage; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA

Information concerning the genetic variability for cup quality of coffee beans are scarce, mainly targeting the specialty coffee market. In Chapter 1, we evaluated the genetic divergence for beans and cup quality among 38 Híbrido de Timor (HT) accessions and derived progenies. We observed high genetic diversity among the genotypes. UFV 377- 34, UFV 390-52, UFV 450-61, UFV 451-41 and UFV 454-43 accessions are promising to improve the beans and cup quality. In Chapter 2, we evaluated the genetic divergence for sensory quality among 101 Coffea arabica genotypes and the correlation between the sensory attributes. There is high genetic divergence for sensory quality among the genotypes. Most of these ones (90%) have genetic potential for specialty coffees production. There is a high genetic correlation between Taste and Sweetness with Final Score attributes. Environmental correlations indicate that distinct causes of environmental changes are acting on different sensory quality characters. Sixteen genotypes with beverage quality classified as excellent are promising to improving the coffee cup quality. In Chapter 3, we evaluated the coffee sensory quality of genotype groups, broken down by genealogical origin, from the current methodology of the specialty coffee market and the "Sensorygram" and Content Analysis as complementary methodologies. We used forty-one genotypes, subdivided in Bourbon, Caturra, Híbrido de Timor, Catimor, Traditional Cultivars and Derived Cultivars of Híbrido de Timor genealogical groups. The Sensorygram and Content Analysis are methods that complement the current scale of notes, subject to use in the sensory characterization of specialty coffees as to the quality and intensity of nuances. The studied groups have genetic potential for specialty coffees production. The Híbrido de Timor Derived Cultivars showed higher potential in the environment evaluated, producing coffees rated as excellent or rare in the specialty coffee market.