Reposted from my account on OSSI
Well, a little bit of a disaster has struck. When I put my saved roots in the cold frame as in the photo shown in earlier post it was still pretty chilly in the mornings, but they took right off. Then it got warmer and I went ahead and took off a few slips, just from three or four roots and planted one of each thinking it would probably get colder again, and I wanted to see what effect that would have on them. Unsurprisingly it slowed them down but did not hurt even though one morning had light frost on the car windshield it didn't kill or even damage the plants.
Meanwhile in the cold frame the others were doing nicely, and I was planning to set them out in a day or two, but it got a bit warmer and I forgot to open the cold frame one morning. The cold frame had been recently remodeled with new tape to seal the seams and with a foot deep bed of composting material providing a little heat from the bottom, and a fully sunny day with a high of about 85 F, my sweet potatoes and the slips they were making cooked. I held out hope they might make some more slips, but the roots themselves were actually cooked. They were soft and dead.
I was only able to save a couple slips from one root so those I planted earlier and those are the only ones I have. Five of the nine roots in that other photo, five unique examples of ipomoea batatas were lost. Fortunately, one that I had planted earlier is our favorite for cooking and it is doing fine as are the other three. All of them are fine sweet potatoes that all have most of my preferred traits. It's just that I won't have extra slips to maybe sell this year.
I described it a "little bit" of a disaster because that is all it is, maybe no disaster at all really because one of the main objectives of this project is a guarantee that a crop failure, even a total one which this isn't, is recoverable the next season.
Except all along I have selected for fast maturity, seed to harvest in 100 days or less and I have plenty more season this year, no need to wait till next. So, I got into my seeds and planted forty in a row in the ground. These seeds are top line seeds mostly from the very plants that were lost. They just sat there for a while until it finally rained and twenty-seven of them popped up immediately and a few more since then. A little bit of a disaster is that I only have twenty-five pots ready and four of them are already take.
And then on a whim I planted a couple hundred low grade seeds. These are seeds that after harvesting last year were later picked off the discarded vines. Mostly little brown and wrinkled things, not the nice fully formed black ones. Drying on discarded vines without fully maturing and even after a frost or two I figured I would be lucky to get half a dozen plants but apparently what I thought were bad seeds and usually didn't mess with aren't bad at all. I suppose they are responsible for the volunteers that I find each year.
Germination on the low grade wasn't the two or three percent I expected but more like 25% or more. (See photo below)
Now I guess the disaster is that I have probably wasted a bunch of seeds because all together I have close to a hundred and only space for about twenty. I do have some more pots but not that many but I don't have enough compost and stuff to mix up more soil to fill them and I have a near religious objection to buying dirt. I might do that though, so I don't have to discard them because chances are very high that plants as good or better than those I lost are in there.
Maybe this is more of an opportunity than a disaster. These low-grade seeds also (mostly) came from those same superior plants. If I can pull off keeping them all maybe I can arrive at a measure of probability that any one new plant will have all or most of the desired traits. Another possibility is that if I can study them close enough maybe I can get better at finding observable traits that will indicate early on which ones are likely to make nice big roots and which ones are more just ornamental.
On the ornamental side both "Likes to Climb" and "Ms. Bloom" are doing fine. I had already planted several of them here and there and those in the cold frame died back from the cold frame turned sauna but immediately shot back up from the roots. I had thought of planting some older generation seeds looking for more ornamentals but under the circumstances won't be doing that this year.