Premium
Effects of temperature, leaf wetness and cultivar on the latent period of Mycosphaerella graminicola on winter wheat
Author(s) -
SHAW M. W.
Publication year - 1990
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1990.tb02501.x
Subject(s) - biology , mycosphaerella graminicola , inoculation , horticulture , cultivar , relative humidity , graminicola , period (music) , botany , maximum temperature , winter wheat , leaf wetness , veterinary medicine , zoology , agronomy , atmospheric sciences , medicine , physics , pathogen , acoustics , geology , thermodynamics , immunology
After inoculation of winter wheat cv. Longbow at a single time, lesions of M. graminicola were produced over a long interval starting 15–35 days after inoculation, dependent on temperature. There was no evidence that a single infection gave rise to more than one lesion. After the initial infection period at 100% relative humidity (r.h.), keeping leaves wet for c. 10 h per day did not shorten latent period on seedlings. Experiments in controlled‐environment chambers demonstrated a minimum latent period at approximately 17°C Variation in the latent period of individual lesions was also minimum at this temperature. The latent period varied among the cultivars tested, cv. Longbow having the shortest, cv. Avalon having almost the longest. Field observations broadly confirmed the results of experiments in constant‐environment chambers.