UK Scientists Create Tomato that Stays Firm

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Originally Posted by PhilaGardener

Yes, I have been harvesting Tomatiga de Ramallet and they are pretty firm when red. Will have to see if how they seem in a few months, but I am starting to wonder how similar to supermarket tomatoes they are going to be!

Not easy to answer as there are over 200 varieties known by that name, which is a generic used in Mallorca for de colgar tomatoes.

There's also a fake hybrid going around.

Usually they are not that firm. Hard skin, yes, hard flesh, uncommon. Depends a lot on particular variety. Note that main use for these is rubbing on bread, and you need soft flesh for rubbing, even it only gets soft after a couple months in storage.

Most supermarket tomatoes use different "ripening delaying" genes than de colgar tomatoes. Why? No idea. They reinvented the wheel and ended with a square.

De colgar tomatoes are very different from supermarket tomatoes.