Resumen

MALAGUTI, Gino. INVESTIGACIONES SOBRE LA PATOGÉNESIS DEL CARBÓN DEL MAÍZ, DEL CARBÓN DEL SORGO Y DEL CARBÓN DEL ARROZ. Agronomía Trop. [online]. 2003, vol.53, n.4, pp.70-77. ISSN 0002-192X.

Results of observations and tests performed in Venezuela during Previous years, in relation to pathogenicity of three cereal srnut fungi are given; a) com smut fungus, Ustilago maydis, is acrial and localizad and infects young and developing tissues in any above ground part of the plant, b) sorghurn smut fungus, Sphacelotheca sorghi, is stationary and penetrates only thru the embryo during germination, staying inside the plant and revealing itself in the entire panicle after flowering and c) rice grain smut fungus, Tilletia (=Neuvossia) barelayana, sometimes only partially infeets some rice grain through the flowers. Emst's opinions on maize smut pathogenicity process are discussed by the author.

Palabras clave : Zea mays L; smut fungi; Ustilago maydis; Sorghum; bicolor L; Sphacelotheca sorghi; Oryza sativa L; Tilletia barclayana.