I thought the hybrid fruit was ripe enough today, so I harvested it... I also harvested a fruit from the pollen donor line.
It is a hybrid that was grown in the basement overwinter then planted into the greenhouse. The mother was Hillbilly or Virginia Sweets, which are bicolored (yellow/red) indeterminate beefsteak tomatoes. Very large fruits by my standards.
The hybrid plants grew extremely slow for me in the basement, in front of an east facing window, under grow lights. This photo compares the growth of the hybrids to the growth of the pollen donor. The hybrids grew very slowly and flowered much later. If they had been a member of the general population, I would have culled them a long time ago.
Today, the plants are growing strongly, and they are indeterminate, so they just keep getting bigger and bigger. Jagodka is pumping out lots of ripe fruits. The hybrid might get around to producing more some day.
Here's what the hybrid fruit looked like, compared to the pollen donor line.
The fruit is the same size as Jagodka. The fruit color was red, which shows that the cross was successful. Taste between them was so close that I couldn't tell a difference. In other words bleck! The yellow color was indeed recessive to red. I'm currently fermenting the seeds. It produced a lot of them! It's about 5 weeks after I like to plant my tomato seeds, but some of them should do fine in spite of the short season.