Heirloom tomatos tested for disease resistance
Can anyone point me to resources on studies heirloom types that have been tested for disease resistances for various kinds of disease? Next year I will be gardening in a community garden which apparently had bad problems with late blight this year, and at least one person told me that they think people should only grow plants bred with specific disease resistances, i.e. hybrids. Personally, the reason I like to garden vegetables is to grow interesting varieties that I would otherwise not get to see or taste, so not growing heirlooms is not an acceptable option for me. Also plenty of heirlooms most likely have good disease resistance (isn't that where the people who develop hybrids get the genetics they want anyway?), but there has been only limited testing for them.
I'd like to know more about this so I can tell people I tried in good faith to grow robust varieties.