Tulip color sports: Fusarium and ethylene production

May 2009 issue of the Cornell Flower Bulb Research Program Research Newsletter:

We are used to considering sports as being essentially identical plants, with nearly identical horticultural characteristics, differing only in flower color, or perhaps flower form. But, how far does
this go? Are sports really “identical” in all characteristics other than the obvious one of flower color or form?

Read the whole article. Starts on page 5.