So...lets just say in general..we should probably always keep an eye out in all of our grows for plants that hermie at any point during any given grow. Seems to be logical to me...agree to disagree??
Right. Obviously if you grow clones from the same motherplant over and over it becomes less of a concern but if you don’t notice nanners on your plants you’re not keeping a good enough eye on them regardless.
what percentage of the seeds, if any, would carry the same mutation?
That’s impossible to say upfront. First, it’s possible none will have the same trait if they aren’t grown under the same circumstance. It’s a phenotype, which is a combi of genetics+environment. Any change in the environment, including slightly different feeding regime, could result in regular plants. Normally it would also depend a lot on what you cross it with, but if you self it, it is still very possible you breed it out.
Also, most polyploids exhibit whorled phyllotaxy, but by far most plants with whorled phyllotaxy are not polyploids.
I'm very interested in doing some small scale home breeding and learning about both this mutation
As I mentioned previously, google for breeding for whorls (different forum so no direct link). You won’t find more elaborate info on whorled phyllotaxy in cannabis than in that thread. I spent years researching it and crossing in and out up to a point where nearly half where whorled. A main advantage is that they simply produce more budsites in the same amount of time, but unless you train/top/lst the plants it can actually be a downside.
That all said, your plant frankly doesn’t look like something I’d use as breeding material. Too messy, and looks like it will become fasciated as I mentioned before. I would definitely remove some of the extra branches.