Blogger strengthened Google plus integration by adding a tab to the dashboard. Now we can create and associate page to a blogger by this update.
After upgrading, your profile will show in this tab. If you have any pages created with this account, these also will appear. You can associate the blog to a particular page or profile page using this option. Go to the corresponding blog's dashboard and select the Google plus tab, then select the page. You can create pages by clicking on the create page link. You can choose to share your posts to Google plus by ticking the option.