digitS'
Garden Master
@Zeedman is likely 100% correct re: bean hybrids in production for seed. I went back and looked at 2 long lists of mostly commercial green bean cultivars and "hybrid" was only noted with regard to parentage in several cases. "F1" was entirely missing.
If you would like to see those lists and variety lists of many other garden vegetables here is the LINK.
These webpages were originally on the North Carolina State University website but were moved several years ago. It took some sleuthing after they did that to find them again. They are now on the Cucurbit Genetics Cooperative website. Some of the varieties listed have been around for quite a long time and would be classified as heirlooms by a simple time definition of 50 or 75 years, or such. The information hasn't been updated very recently except for, perhaps, the cucurbits but it gives the gardener an idea of origin and year of release to growers.
Steve
If you would like to see those lists and variety lists of many other garden vegetables here is the LINK.
These webpages were originally on the North Carolina State University website but were moved several years ago. It took some sleuthing after they did that to find them again. They are now on the Cucurbit Genetics Cooperative website. Some of the varieties listed have been around for quite a long time and would be classified as heirlooms by a simple time definition of 50 or 75 years, or such. The information hasn't been updated very recently except for, perhaps, the cucurbits but it gives the gardener an idea of origin and year of release to growers.
Steve