GaNinFl said:Is there more info or studies of this nature?
Sorry, I don't know of any specific studies in daylilies. There may be more general studies that look at the genetics of flower formation, particularly at doubling. The situation in some flowers may be related to polymerous daylilies. In those the extra flower parts tend to be modular, that is, additional modules are added to the normal three of a daylily flower. A module in this case being one sepal, one petal, one stamen for each of those and one extra set of parts in the pistil including an extra stigmatic lobe. There are likely to be genes (structural) that determine each separate part and other genes that regulate those structural genes. A mutation in a regulatory gene might cause one or more extra entire modules to be made while a mutation in a specific structural gene might cause only one extra part of a module to be made - in some cases just of the pistil perhaps.
