Place wheat berries in a medium bowl; cover with water to 2 inches above wheat berries. Cover and let stand 8 hours. Drain.
Place wheat berries in a medium saucepan; cover with water to 2 inches above wheat berries. Bring to a boil, reduce heat, and cook, uncovered, 1 hour or until tender. Drain and rinse with cold water; drain well. Place wheat berries in a large bowl; add cucumber, green onion, arugula, parsley and tomatoes.
Combine lemon rind, lemon juice, sugar, salt and pepper; gradually add oil, stirring constantly with a whisk. Drizzle dressing over salad; toss well to coat. Stir in cheese. Let stand at least 30 minutes; serve at room temperature.