- UHRA Home
- Browsing by Author
Browsing by Author "Koopmann, Birger"
Now showing items 1-8 of 8
-
Detection of Leptosphaeria maculans races on winter oilseed rape in different geographic regions of Germany and efficacy of monogenic resistance genes under varying temperatures
Winter, Mark; Kloeppel, Coretta; Koopmann, Birger (2013-10-09) -
Development of light leaf spot and phoma stem canker on a range of current and historical oilseed rape cultivars at Rothamsted in 2003/4 and 2004/5 growing seasons
Downes, K.; Evans, Neal; Pirie, E. J.; Fitt, Bruce D.L. (IOBC, 2006)Field trials in successive growing seasons (2003/04 and 2004/05) were monitored for light leaf spot (Pyrenopeziza brassicae), phoma leaf spot and phoma stem canker (Leptosphaeria maculans) infection. Each experiment included ... -
Effects of temperature on R1m6-mediated resistance to Leptosphaeria maculans in Brassica napus
Huang, Yongju; Liu, R.; Li, Zi-Qin; Evans, Neal; Chevre, Anne-Marie; Delourme, R.; Renard, Michel; Fitt, Bruce D.L. (IOBC, 2006)Near-isogenic lines of Brassica napus lines with/without the resistance gene Rlm6 were used to investigate the effects of temperature on Rlm6-mediated resistance to Leptosphaeria maculans. Leaves were inoculated with ... -
Efficacy of major resistance genes against Leptosphaeria maculans in oilseed rape and influence of temperature on the plant-pathogen interaction
Kloeppel, Coretta; Koopmann, Birger; Winter, Mark (2013-09-25)Stem canker caused by Leptosphaeria maculans is an important disease in oilseed rape (Brassica napus L.) and causes significant yield losses. The cultivation of resistant cultivars is a reliable tool for protecting the ... -
Light leaf spot (Pyrenopeziza brassicae) : a resurgent problem in the UK
Evans, Neal; Burlakoti, Rishi R.; Gladders, Peter; Ritchie, Faye; Turner, J.A.; Kloppel, Coretta; Fitt, Bruce D.L. (2014)Since 2006, the incidence and severity of light leaf spot (Pyrenopeziza brassicae) in winter oilseed rape in the UK has increased so that the disease is now the main disease concern for growers with respect to yield loss. ... -
A new set of international Leptosphaeria maculans isolates as a resource for elucidation of the basis and evolution of blackleg disease on Brassica napus
Van de Wouw, Angela; Scanlan, Jack; Al-Mamun, Hawlader; Balesdent, Marie-Hélène; Bousset, Lydia; Burketová, Lenka; del Rio Mendoza, Luis; Fernando, Dilantha; Franke, Coreen; Howlett, Barbara; Huang, Yongju; Jones, Eirian; Koopmann, Birger; Lob, Suhaizan; Mirabadi, Ali; Nugent, Bridgit; Peng, Gary; Rossi, Franco; Schreuder, Huibrecht; Tabone, Annie; Van Coller, Gert; Batley, Jacqueline; Idnurm, Alexander (2023-09-22)A collection of isolates of the fungi Leptosphaeria maculans and L. biglobosa, which cause blackleg disease on Brassica napus (canola/oilseed rape) and other Brassicaceae species, was assembled to represent the global ... -
OREGIN collection of oilseed rape fungal pathogen isolates managed by a relational database accessible to stakeholders via the Internet
Latunde-Dada, Akinwunmi O.; Hornby, P. E.; Castells-Brooke, N.; Evans, Neal; Fitt, Bruce D.L. (IOBC, 2006)One aim of the Defra-funded Oilseed Rape Genetic Improvement Network (OREGIN) is to establish, characterise and catalogue a collection of Leptosphaeria maculans (phoma stem canker) and Pyrenopeziza brassicae (light leaf ... -
Prediction of the date of onset of phoma leaf spot epidemics on oilseed rape in the UK
Evans, Neal; Baierl, Andreas; Gladders, Peter; Hall, B.; Fitt, Bruce D.L. (IOBC, 2006)To reduce reliance on fungicides for control of oilseed rape diseases, Decision Support Systems (DSS) are being developed to target applications as part of an integrated disease management strategy. This paper reports on ...