Abstract

ESCALLON, Rocío; RAMIREZ, Mónika  and  NUSTEZ, Carlos E. Evaluating potential yield and resistance to Phytophthora infestans (Mont. de Bary) in the Solanum phureja (Juz. et Buk.) yellow potato collection. Agron. colomb. [online]. 2005, vol.23, n.1, pp.35-41. ISSN 0120-9965.

Twenty-five Solanum phureja yellow potato (round tuber) genotypes were evaluated at ICA’s San Jorge Experimental Station in Soacha (Cundinamarca department, 2,900 m a.s.l.) and at the Universidad Nacional’s Marengo Experimental Station in Mosquera (Cundinamarca department, 2,550 m a.s.l.); the tubers were obtained from the Fenalce-Fedepapa project potato collection. A random complete block design was employed for measuring tuber size and weight based on first, second and third class. The results led to a group of genotypes being identified having average commercial production size (first and second class tubers) superior to the traditional "egg yolk" variety. Inoculating leaves in a damp chamber using Zero biotypes and the HIN complex for evaluating resistance to P. infestans led to the conclusion that there are no R genes in these genotypes, meaning that they are thus a source of horizontal resistance

Keywords : Diploid potato; native potato; genetic resources; late blight.

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