The glaze gene in Brassica oleracea

[raymondo]

I've got some F1s growing of a cross between Green Glaze, a collard, and a red cabbage. Of course, the cabbage is actually purple. I beats me why they call it red. Anyway, I got some lovely purple tinged plants with glossy leaves in among the F1 plants. Very pleasing, as I wasn't at all sure about the genetics of the glossy or glazed leaf. Today I found some info from Carol Deppe in which she states that the glaze gene is a simple, single, recessive gene which won't show up in the F1 of a cross with a non-glaze type. So how come I have glossies?
The only explanation I can think of for my glossy F1s is that the non-glaze parent must have been heterozygous at the glaze gene locus. It was purchased in a local nursery so could well have been a hybrid. In fact, given the variation I'm seeing in the F1s I'm almost certain that it was a hybrid.
Or could there be some other explanation? Any thoughts?

[raymondo]

Further invesitgation has revealed at least two genes responsible for the glossy leaf. One, called either gl or G1, depending on author, is indeed a recessive, as Carol Deppe described. The other, known as Go, is a partially dominant gene. Go is the one in Green Glaze collards, which is one of the parents in my cross. Mystery solved it seems.

[ottawagardener]

That makes sense. I would like to see the purple tinged glossy leaf.