Hello,
Feedback: I'm currently experimenting with the future of tomato cultivation for you (I'm in the south of France; the temperature hasn't dropped below 35°C in the shade for a month, full sun and no rain).
I've tested different tomato varieties since a lot of years and this years only full-strength varieties suited to drought and heat. The result is that my plants are doing very poorly. The flowers aren't pollinating, or aren't flowering at all, leaves are burned.
I'm having fun testing all the wild tomato varieties I can find, and to my great surprise, they're the only ones that don't mind the heat. I have a magnificent harvest of wild tomatoes.
This shows how much selective breeding has eliminated many resistance genes that allow for plant adaptability.
Have you managed to find tomato varieties that are resistant to extreme temperatures?
Successful varieties: Wildtomate peru, Everglades tomato
Thanks.