2013-10. Solanaceae Conference, Genome vs Phenome. Beijing
The 10th Solanaceae Conference: Genome versus Phenome
October 13 - 17, 2013 - Beijing, China
Genetic diversity in potato breeding for nutritional quality in Colombia
Clara Piñeros, Alejandra Guateque, Clara Peña, David Cuéllar, Ajjamada Kushalappa, Carlos Narváez, Patricia Restrepo, Teresa Mosquera
Southern Colombia is a diversity center for diploid potato. We are starting a potato breeding program focused on nutritional traits. We are evaluating nutritional quality of potato genotypes and the biochemical analysis includes sugars, proteins, minerals, starch, moisture, fat, dietary fiber and others as antioxidants that includes carotenoids and vitamin C. Chemical analysis also includes antinutritional compounds such as glycoalcaloidsthat are common in potatoes. These results contribute to the selection of optimal genotypes for breeding and consumption.
Phenotypic characterization of reducing and non-reducing sugars content in Solanum tuberosum group Phureja
Duarte Diana, Restrepo Patricia, Kushalappa Ajjamada, Mosquera Teresa
Ready-to-eat products present an increasing demand which is reflected in the fast growing of potato processing market. Colombia is an important producer of diploid genotypes, which belong to the culOvated group Phureja and present outstanding organolepOc properOes. Currently, there are not Phureja culOvars suitable for frying processes because of high levels of reducing sugars in the tubers. AssociaOon mapping is a strategy to study the molecular basis of complex traits such as reducing (glucose and fructose) and non-reducing sugars (sucrose, main source of reducing sugars) content, as a first step in the development of diagnosOc molecular markers that can be used by breeders in processes of marker assisted selecOon. The main purpose of this research is to perform the phenotypic characterizaOon of reducing and non-reducing sugar content in a natural populaOon of Solanum tuberosum group Phureja using the HPLC technique, to obtain the phenotypic informaOon to implement an associaOon mapping approach to idenOfy genomic regions related to frying quality.
Novel candidate genes for quantitative resistance to late blight in potato
Teresa Mosquera-Vásquez, María Fernanda Álvarez, José M. Jiménez-Gómez, Astrid Draffehn, Christiane Gebhardt
Late blight continuous to be the most important disease of the potato crop and its chemical control generates high production costs and damage to the environment. The development of new potato cultivars with field resistance to Phytophthora infestans requires the search for variants of those genes that are involved in the quantitative defense response.
Project Sponsors:
