Hello!
two years ago a was active on Citrus Growers Forum. Now I am back! Great that most people from the old forum are also active here! I had not much news to post inbetween. That was the reason I hersitated to register here. But now I can present a little seedling of cross I made. Yuzu x Poncirus:
A pitty that most seeds were rotten. Only three of them germinated, one was this hybrid. (I have to improve my seed care!)
It is interesting to me that the seedling is mostly monofoliate. But it is definitely a cross of Yuzu with pure Poncirus. There seems to be a rule that the smaller the leaves of the citrus parent the fewer trifoliate leaves you will find. I have also a cross of Kucle (= Kumquat x Clementine) x Poncirus that has narrow mostly monofoliate leaves. This seems to be the genetic influence of the willow leaf parent in Kucle. One purely monofoliate seeling of Kucle has leaves like the willow leaf mandarine. (To remember: Clementine is believed to be a cross with willow leaf mandarine).
I hope my Yuzu x Poncirus cross is somehow tasty and pretty hardy. We will see some day...