Variation- Grapefruit QuickBread. Substitute a small grapefruit for orange as well as rind. In my vision impairment, I thought a grapefruit was an orange...and we loved it. It is slightly more tart, but I must admit that we do love grapefruit.
Another Variation- Lemon Poppyseed QuickBread. Substitute a lemon for orange as well as rind and use extra water to make one cup liquid. Add 1 tsp poppyseeds.
Yet Another Variation- Mango Orange QuickBread (I'm not kidding). Substitute ground pulp of one mango for orange and use 1/2 cup orange juice.