Qualidade de tubérculo para processamento e seleção de clones de batata em diferentes condições de cultivo do Sul do Brasil

• Ano de defesa: 2012
• Autor(a) principal: Gnocato, Francisco Saccol
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Agronomia; UFSM; Programa de Pós-Graduação em Agronomia
• Palavras-chave em Português: Solanum tuberosum L.; Ambientes de cultivo; Colheita precoce; Melhoramento; Early harvest; Growing conditions; Breeding; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: http://repositorio.ufsm.br/handle/1/5068

The objective of this study was to evaluate the processing quality of potato tubers to identify superior clones under different growing conditions of Southern Brazil. Two trials were carried out in different conditions. The first trial was carried out during summer in São Joaquim, SC, and during spring and fall seasons in Júlio de Castilhos, RS to evaluate the genotype x environmental interaction for tuber quality and the gain from selection. A total of 18 potato genotypes were evaluated for chip color, dry mass, reducing sugar and amylose contents. Summer growing conditions increase the gain from selection and the selection is correlated with both spring and autumn seasons. The second trial was carried out to evaluate the yield and the tuber quality of potato clones in early harvest during autumn and spring seasons in Júlio de Castilhos, RS. A total of 12 potato genotypes were evaluated for yield, dry mass, sucrose and reducing sugar contents in tubers harvested at 70 and 90 days after planting (DAP), autumn season, and 70 DAP, spring season. Potato tubers harvested at 90 DAP in autumn and at 70 DAP in spring do not get the minimal processing quality necessary for the industry.