Here's a pedigree of the Beautifully Promiscuous and Tasty Tomato Project.
High resolution imageIt shows the ancestors of the varieties that I am currently sharing. It's promiscuous to the core, so I can't possibly show all the interactions. These are the main pollen flow paths that are known, or highly likely.
The F2 and F3 after crosses with wild tomatoes were highly selected for promiscuity and self-incompatible-like traits. The F2 were open pollinated. The F3 were manually pollinated. In every generation, there was some possibility of wild pollen introgressing into the population. And some possibility of bee-fascilitated crossing among the wild species.
Abbreviations used.
BH = Big Hill. A super early bicolor beefsteak developed on my farm from a cross between Hillbilly and Jagodka. Super early.
H = Solanum habrochaites
P = Solanum pennellii
Wh = Descended from Domestic X habrochaites.
Wp = Descended from Domestic X S pennellii
W = BH crossed to (Domestic X habrochaites) or (Domestic X pennellii)
BH X W - XL 2019. Red beefsteak. Very early. Most like a grocery store tomato. One plant out of 250. Self incompatible, so pollinated by something else in the patch with much smaller fruits, mostly by full or half siblings. This is not my preferred phenotype. I'm making seed available, because it was an amazing plant. Earliness from Jagodka. Huge fruits from Hillbilly. Self-incompatibility from S habrochaites. These may segregate for self-fertile/sterile. Interesting traits often skip a generation, so large fruits are expected to segregate out of the 2nd generation. Descendants with yellow fruits are also possible. If I weren't breeding for chefs, I might pursue this line more heavily. Seed is fairly limited. Nominally 25% wild.
BH X W - Best Taste. Chef selected for amazing flavors. Early. Mostly yellow fruited. Self-incompatible, may include some pure S habrochaites pollen donors. Most pollination done by the BH X W sibling group. Up to 250 parents. 3 species hybrids are likely (lycopersicon, habrochaites, pennellii). These may segregate for self-fertile/sterile. Nominally 25% wild.
H X ((BH X Wh) or (BH X Wp)). Most interesting genetically. Highest diversity. More s alleles. 3 species hybrids expected. Fully functional self-incompatibility system. In the next generation fruits are highly likely to be small, green and not tasty. The F2 may produce red/yellow/white/bicolor fruits with lots of fascinating flavors. Higher resistance to bugs/pests/diseases expected in this population than any other. Nominally 75% wild.
[BH X Wp] X (S habrochaites or (BH X Wh)). Not shown on image. The reciprocal cross to the one above. This cross was done to make 3 species hybrids that are 25% S pennellii, 25% to 50% domestic, and 25% to 50% S habrochaites. Medium diversity. I recommend doing minimal selection on this population until the 2nd or 3rd generation. Lots of interesting things may show up. Due to the limited availability of s alleles. I recommend recombining with more elite lines after a few generations. Likely to segregate for self-fertile/sterile.
With any of these seeds, grow as many plants as you can manage, even if that means putting 10 plants into the same hole, or planting them right next to each other.
I've arranged for about 50 collaborators so far, some of them growing up to a couple hundred plants. Should be a fabulous year for the project.