Journalartikel

Jahr der Veröffentlichung: 1995

Seiten: 299-306

Zeitschrift: Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz = Journal of plant diseases and protection

Bandnummer: 102

Heftnummer: 3

ISSN: 0340-8159

Verlag: Ulmer

Abstract: 
Sporulation intensity of blast lesions over time followed a distribution curve skewed to the right. Old lesions had very low sporulation intensities. Lesions grow substantially during their development. With respect to total sporulation potential, lesion size therefore partly compensates for low sporulation intensity of old lesions. Sporulation intensity of individual lesions can be judged by means of visual criteria such as lesion color and zonation. Mean duration of the infectious period i in the field was 11.5, 8, and 7.5 days for lesions on leaf blades, leaf sheaths, and panicle necks, respectively. Lesion development was significantly affected by ontogenetic host factors and environment. Duration of i, final lesion size, and estimated sporulation capacity could be explained by 47, 23 and 45 % based on negative effects of leaf age at infection time, positive effects of soil moisture tension, and temperature influences. Wetness conditions correlated positively with these lesion parameters.

Harvard-Zitierstil: PINNSCHMIDT, H., BONMAN, J. and KRANZ, J. (1995) LESION DEVELOPMENT AND SPORULATION OF RICE BLAST, Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz = Journal of plant diseases and protection, 102(3), pp. 299-306

APA-Zitierstil: PINNSCHMIDT, H., BONMAN, J., & KRANZ, J. (1995). LESION DEVELOPMENT AND SPORULATION OF RICE BLAST. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz = Journal of plant diseases and protection. 102(3), 299-306.