Preheat oven to 350 degrees and butter a 9×5 inch loaf pan.
In a medium bowl, combine zucchini, sugar, oil, yogurt and egg.
In a separate bowl, whisk the AP flour, whole wheat flour, baking soda, salt and cinnamon together.
Mix together the wet and dry ingredients until just combined, then gently stir in the blueberries.
Pour into prepared pan and bake for 50-70 minutes, or until a toothpick inserted into center comes out clean. I checked my bread at 50 minutes and baked to nearly 60 minutes.
Cool in pan for 10 minutes, then loosen the edges of the pan with a knife and remove from loaf pan to a cooling rack.