Dennis
To stabilize a trait when it is only showing in one cultivar, I would self it. And then make sibling crosses and back crosses with the best of your results. You can also make the same cross that produced the trait to see if you can produce the trait again and hopefully have two different plants with the same trait. Thankfully, when new traits arise from hidden genotypes, they are likely to occur in several gardens at once. So if you keep in touch with hybridizers in some way, you will hear of other plants you can use.
I rarely post to the forums in the summer BTW.....I get pretty busy.....but feel free to send me private email. I'm posting now because we have had 7 straight days of rain in North Carolina and I'm going out of my mind being inside all the time!!!!
