Results 211 to 220 of about 18,107 (236)
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Reactions of eastern Canada oat genotypes to Puccinia coronata f. sp. avenae
Canadian Journal of Plant Science, 2019: Crown rust, caused by Puccinia coronata f. sp. avenae (Pca), is the most important disease and yield limiting factor of oat production in eastern Canada.
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Annals of Applied Biology, 1976
SUMMARYThe frequency of penetration from appressoria of Puccinia graminis avenae and P. coronata avenae varied among Avena species and between oat cultivars, although both rusts produced susceptible infection type pustules on the cultivars tested. Penetration on cv. Garry was significantly less than that on the Avena species (A. barbata, A.fatua and A.
J. K. KOCHMAN, J. F. BROWN
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SUMMARYThe frequency of penetration from appressoria of Puccinia graminis avenae and P. coronata avenae varied among Avena species and between oat cultivars, although both rusts produced susceptible infection type pustules on the cultivars tested. Penetration on cv. Garry was significantly less than that on the Avena species (A. barbata, A.fatua and A.
J. K. KOCHMAN, J. F. BROWN
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Host range ofPuccinia coronata,Puccinia graminis, andPuccinia reconditaisolates fromAgropyron repens
Canadian Journal of Plant Pathology, 1985The host range of single isolates of Puccinia coronata, P. graminis, and P. recondita from quack grass (Agropyron repens) was determined within controlled environment conditions. The P. coronata quack grass isolate had a relatively broad host range and this rust may overwinter as mycelium in quack grass rhizomes in eastern Canada.
M.G. Sampson, A.K. Watson
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Annals of Applied Biology, 1976
SUMMARYThe influence of temperature and light on prepenetration development of single and mixed isolates of Puccinia graminis avenae and Puccinia coronata avenae was studied on 0–2% water agar and on leaves of three oat cultivars and on three non‐cultivated species of Avena. Germination of uredospores of P. graminis avenae and P.
J. K. KOCHMAN, J. F. BROWN
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SUMMARYThe influence of temperature and light on prepenetration development of single and mixed isolates of Puccinia graminis avenae and Puccinia coronata avenae was studied on 0–2% water agar and on leaves of three oat cultivars and on three non‐cultivated species of Avena. Germination of uredospores of P. graminis avenae and P.
J. K. KOCHMAN, J. F. BROWN
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Selection against unnecessary virulence in Puccinia coronata
2000A population of Puccinia coronata derived from a bulk collection of urediniospores from oat growing near a hedge of the aecial host, Rhamnus cathartica, was grown for 10 uredinial generations on seedlings of a susceptible oat cultivar in the greenhouse.
Bardin, Marc, Leonard, K.J.
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Gradual Evolution of Virulence ofPuccinia coronataon Oats
Phytopathology, 1983Apparition et progression des formes de P.c.
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