Is anyone here aware of any hybrids between lemon and grapefruit ?
Or citron and pomelo (or any other of these type of combination) ? I thought I would ask the citrus experts here.
I know that orange has a little bit of pomelo in its genome, and lemons are descended from sour orange and citron, so technically a lemon is sort of like a cross between these two (citron and pomelo), but that's not really what I mean, since the pomelo heredity is so low, and it has more C. reticula (mandarin) heritage mixed in than the other two.
You see citron/lemon hybrids and grapefruit/pomelo hybrids all the time, but they are most often mixed with mandarin. Citron-lemon hybrids exist (Ponderosa lemon) and Grapefruit-pomelo hybrids exist (Oroblanco) but I've never read of a Grapefruit-lemon hybrid.
It seems these two groups are too far on the fringe for anyone to have considered combining them together. Oranges (and to a lesser extent mandarins which are not so dissimilar) are the mainstay of citrus and everything else is an outlier. There are lemons and then there are grapefruits, but no one really thinks about combining these two families together.
Would such a fruit have any desirable attributes, do you think?