4. How to Enhance the Efficiency of selection Breeding (1) Selection of Objective populations (2)Selection Criteria (3)Selection conditions (4)Number of plants and Time of Selection (5) Inheritability of plant characteristics; Effects of direct and indirect Selection4. How to Enhance the Efficiency of Selection Breeding (1) Selection of Objective populations (2) Selection Criteria (3) Selection conditions (4) Number of plants and Time of Selection (5) Inheritability of plant characteristics; Effects of direct and indirect Selection