Fliptop, I don’t know the answer to your question but I would guess it’s possible.
I cut open the first fruit from my Sweet Tart Seedling #1, which was a runt/nubbin, and it tastes like a Sweet Tart that is over ripe because well, it was over ripe. It would have been best if I cut it open maybe two days ago but I wanted to make sure it was fully ripe. It looked super orange outside and it smelled very sweet.
When I cut it open, it was a very deep orange color but I could tell it was over ripe already. I took a Brix reading and it came out to 19.1% Brix. I definitely over watered this trying to pump up its sisters size. There is another ST Seedling #1 fruit that has the typical ST shape except it’s probably 1lbs or more. Anyways, the fruit was over ripe and tasted sweet but completely lacked the Tartness that balances out the sugars. I give this fruit a 5 out of 10 because without the acidity, this mango doesn’t taste very good.
There was a bit of Indochinese flavor and at 19% Brix, it was sweet enough but even a slight bit of tartness would have significantly improved its eating quality.
There are more fruit on the tree and I’ll definitely report back on the much larger fruit.
I believe Brad has some fruit on the Sweet start seedlings we planted at his orchard as well.
Simon