This is totally speculative, but when I first started playing around with breeding I had very little success getting fruit to set, so what I started doing was grabbing one bud from each variety I wanted to use as a donor and mixing all the pollen together. This way I could end up with a couple dozen different sets of DNA in a single fruit. Sounds haphazard, but all of the lines I'm working on stabilizing now actually derived from that method. Anyway, based on the genes that popped up in later generations I'd say that green zebra and blondekopfchen must have been really heavy pollen producers, or had particularly viable pollen, because the gs and multiflora genes appeared in a very high percentage of descendants.
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