Heritage varieties

[freckledbeck]

I thought heritage varieties would be more varied and suitable for more specific conditions, ie most modern seeds seem to be a one size fits all, general purpose type varieties, wheras I assumed heritage varieties would be plants that had grown successfully in specific areas for years -if you see what I mean! I also thought many modern varieties were grown for their ability to keep well during transit and to look good rather than for flavour or pest resistancy? (for supermarkets)