After the opportunity for me to buy cheaply 18 back issues (1985-) of the NALS yearbook arose a few years ago, and seeing the great work that included technical writing, I joined NALS just last year.(Okay, you can stop the laughing, finger pointing, spitwads and other gestures of shaming.... whew, at least it's not cold enough for snowballs...)
To the point, I received lily seed in my initial packet, and they were tetra orientals from Robert Griesbach. I'm surprised you hadn't heard about them, Tracey. I don't know how the first gene doublings (2n to 4n) were made, via cochicine, oryzalin, or what, but I would have been surprised if the work had not already been done. Some breeder (and not necessarily with Lilium
) prefer to stay with 2n, or whatever the natural ploidy is for the species/genus. It took Ed McRae years to realize the potential of tetraploids.
Um, a bit of a ramble, but oh well.