date:Aug 06, 2013
ut 44 isolates (22%) of all 202 concerned previously described and officially nominated Bl: races, mostly Bl:22, Bl:24, Bl:25 and Bl:26 or closely related races (Bl: is the official code for races of Bremia lactucae).
As usual, most of the isolates encountered in 2012 were of minor importance because they disappeared quickly. Only three of the newly found and evaluated races since 2011 were important enough to be nominated as Bl:29, Bl:30 and Bl:31.
Bl:29 appeared regularly in Portugal, No