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Isolation and characterisation of the mating-type (MAT) locus from Rhynchosporium secalis
(2003-12-31)
The mating-type (MAT) genes from Rhynchosporium secalis were isolated using PCR-based methods. Characterisation of the MAT idiomorphs suggests that R. secalis is closely related to the discomycetes Pyrenopeziza brassicae ...
Survival of A-group and B-group Leptosphaeria maculans (phoma stem canker) ascospores in air and mycelium on oilseed rape stem debris
(2003-12)
Mycelium of Leptosphaeria maculans survived on oilseed rape stem base debris buried in sand for 2, 4, 6, 8, 10 or 12 months and produced pseudothecia after subsequent exposure on the surface of the ground under natural ...
Effects of temperature on maturation of pseudothecia of Leptosphaeria maculans and L-biglobosa on oilseed rape stem debris
(2003-12)
Effects of temperature on maturation of pseudothecia of Leptosphaeria maculans and L. biglobosa, closely related species which coexist on UK oilseed rape, were investigated. Stages in pseudothecial maturation on naturally ...
Spatial aspects of light leaf spot (Pyrenopeziza brassicae) epidemic development on winter oilseed rape (Brassica napus) in the United Kingdom
(2003-06)
In microplot experiments in 1998-99 and 1999-2000, the start of light leaf spot epidemics could be predicted from weather data, using empirical equations for Pyrenopeziza brassicae apothecial (ascospore) development. ...
Effects of temperature on ascospore germination and penetration of oilseed rape (Brassica napus) leaves by A- or B-group Leptosphaeria maculans (phoma stem canker)
(2003-04)
Ascospores of both A-group and B-group Leptosphaeria maculans germinated at temperatures from 5 to 20degreesC on leaves of oilseed rape. Germination of ascospores of both groups started 2 h after inoculation and percentage ...
Preliminary evaluation of root disease of winter oilseed rape in the UK
(HGCA, 2003-03-01)
During the 2000/1 season, significant variability in the senescence of oilseed rape (OSR) stems was observed in Velcourt-managed fields. These symptoms tend to occur more in the southern part of the country, i.e. Kent and ...