New Race 9 of Lettuce Downy Mildew: Miscellaneous Notes

A new race, race 9, of the lettuce downy mildew pathogen (Bremia lactucae) has been confirmed and named in 2018. Here are some miscellaneous notes regarding the identification and naming of new races of this lettuce pathogen. Bremia lactucae is a genetically diverse pathogen and is made up of distinct, separate sub-groups or sub-populations called […]