Behaviour of maize inbreds and single-crosses to spontaneous infections of Puccinia sorghi Schw

SANDOVAL, MC; CORCUERA, VR, BERNATENE, EA Y NARANJO, CA.

Maize Genetics Cooperation Newsletter

University of Illinois

Lugar: Illinois; Año: 2004 vol. 78 p. 33 - 33

1090-4573

During 1990, at the Instituto Fitotécnico de Santa Catalina, a maize quality breeding plan aimed at obtaining high nutritional and high added value commercial maize hybrids was initiated. Studyin the behaviour of the inbred and single crosses in relation to the most important diseases constitutes a main objetive of the program. During the growing season of 2002/2003, 32 inbreds and 60 hybrids sown in a three replicate randomized block design field trial at Llavallol at a density of 71,500 plants/ha were studied for their behaviour to spontaneous infection of Puccinia sorghi Schw, the etiological agent responsible for "common leaf rust". In maize regions with temperate winters like Argentina, the whole cycle of the disease may be verified. In our country, severity levels for common rust are near 40%.