Studies on the rice blast pathogen, resistance genes, and implication for breeding for durable blast resistance in Colombia

Correa Victoria, F.J.; Tharreau, D.; Martinez, C.; Vales, M.; Escobar, F.; Prado, G.; Aricapa, G.

Rice blast interaction with rice and control Proceedings of the 3rd International Rice Blast Conference, Tsukuba Science City, Ibaraki, Japan, 11 to 14 September 2002: 215-227


Accession: 004332321

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Rice blast disease caused by Pyricularia grisea, the anamorph of Magnaporthe grisea, is the main rice production constraint in Latin America. Development of resistant cultivars has been the preferred means of controlling this disease; however, blast resistance is defeated by the pathogen shortly after cultivar release, affecting both leaves and panicles of the plant and reducing yields severely. This paper covers the characterization of virulence and genetic structure of P. grisea in Colombia, as well as the identification and use of resistance gene combination to P. grisea for the development of rice cultivars with durable blast resistance.