The existing NNNX varieties you find in the table of the pdf file The fertility of nnnx daffodil varieties .More should be generated by hybridizers. Many of these plants are fertile and can be used for further interesting crosses.
Theo
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Thank you, Theo. I hope you know how much we appreciate you sharing your research. It was 60 degrees F. here in middle TN today and I was able to dab some pollen around.
Thank you, Betty. I am only able to dab some pollen around in my greenhouse.
Theo