Preheat oven to 350°F In large bowl, cream butter until fluffy. Beat in sugar until mixture is light and fluffy, 5 to 8 minutes. Beat in eggs one at a time. Stir or sift together flour, baking soda and salt; mix in berries. In separate bowl, stir together yogurt, orange juice and rind. Mix 1/3 of the dry ingredients into batter; add half of the yogurt mixture. Stir in another third of the dry ingredients, then remaining yogurt mixture and dry ingredients. Pour into well-greased and floured deep 9 or 10 inch tube or bundt pan; smooth top and tap pan lightly on work surface to remove air bubbles. Bake for 60 to 70 minutes or until tester inserted in centre comes out clean and cake is well-risen. Let cool for 15 minutes. Dust with icing sugar.