Resistance of experimental lines of brome grasses (Bromus spp.) to head smut

  • G. F. Covas Universidad Nacional de La Pampa, Facultad de Agronomía INTA EEA-Anguil. Anguil, La Pampa.
  • M. de los A. Ruiz INTA EEA-Anguil. Anguil, La Pampa.
  • J. Pérez Fernández Universidad Nacional de La Pampa, Facultad de Agronomía INTA EEA-Anguil. Anguil, La Pampa.

Keywords:

head smut, Ustilago bullata, brome grass, Bromus brevis, Bromus catharticus, Bromus parodii, resistance,

Abstract

The main purpose of this study was to identify resistance of experimental lines of Bromus catharticus, B. parodii y B. brevis to Ustilago bullata, an important head smut pathogen of brome grass. Seeds of 100 experimental lines were inoculated with a uniform mass of ustilospores obtained from each species and seeded in field plots in 1992. At maturity the number of smutted panicles were counted. Data were compared by using "1.2 test of homogeneity. B. brevis and B. parodii experimental lines varied in their reactions to U. bullata. AII B. catharticus plants were susceptible to the pathogen. Differences in susceptibility were found between geographic sources of B. brevis and B. parodii genotypes.

Downloads

Download data is not yet available.

References

Covas, G. 1981. Las especies pampeanas de Bromus (Gramineae). Apuntes para la Flora de La .Pampa. N° 62,63 Y 64: 247-265.

Covas, G. e Itria C. D. 1968. Nueva especie de Bromus de la flora argentina. Boletín de la

Sociedad Argentina de Botánica XII: 113-116.

Covas, G. e Itria C. D. 1969. Cebadillas. Circular de Extensión N° 28. EEA Anguil (INTA).

Falloon, R. E., M. P. Rolston and D. E. Hume. 1988. Head smut of prairie grass and mountain brome: a review. New Zealand Journal of Agricultural Research. Vol 31 (4): 459-466.

Hirschhorn E. 1977. Novedades sobre el carbón que ataca Bromus spp. en la Argentina. Bol. de la Soc. Argentina de Botánica Vol. 18 (1-2): 56-64.

Pérez Fernández, J., Cavas, G. F. Y Ruiz, M. de los A. 1993. Carbón de la panoja de la cebadilla (Ustilago bullata Berk.) en tres especies del genero Bromus. Publicación Técnica N° 44. EEA Anguil.

Published

2020-06-06

How to Cite

Covas, G. F., Ruiz, M. de los A., & Pérez Fernández, J. (2020). Resistance of experimental lines of brome grasses (Bromus spp.) to head smut. Semiárida, 8(1), 19–27. Retrieved from https://ojs.unlpam.edu.ar/index.php/semiarida/article/view/4913

Issue

Section

Artículos Científicos y Técnicos