Christopher Weeks wrote:Yeah, one of my goals here is to step up my invasive horticulture skills by creating multiple long approach-grafts between these pseudolulo and tomato plants to see if I can force organelle transfer across the graft boundary and develop something weird. Anything that was obviously different would be interesting enough to justify the experiment even if it wasn't really desirable.
You might not have to settle for organelles only. If you could convince the graft union callus tissue to produce some vegetative buds, there's a chance that some of them might be effectively allopolyploid hybrids, by transfer of the entire nuclear genome from a cell of one species to a cell of the other.
Here is a study where they did exactly that, though there was some tissue culture and genetic messing-around involved in this case. They do hypothesize that this might happen in nature, though, and that it might be a route to speciation by effectively hybridizing quite distantly related species.
Those are some cool and brutal-looking nightshades!