Influence of age, and time of detachment on development of white rust in detachedBrassica campestrisleaves at different temperatures

Growth ofAlbugo Candidain leaf callus cultures ofBrassica rapa

“…It is possible that the incubation temperature (25 ± 1°C) stimulated the development of the sexual stages of A. Candida in leaf callus cultures. Temperatures of 25°C and above favour the production of oospores over that of zoosporangia in A. Candida (Verma et al 1983, Goyal et al 1996 and in A. occidentalis (Raabe & Pound 1952a). Incubation temperatures of 25 and 30°C also favoured the formation of oospores in A. candidainfected B. juncea callus tissues (Lahiri & Bhowmik 1993), although the origin of the oospores was not clear; the hypertrophied inflorescences used as expiants invariably contained abundant oospores.…”