Three selective methods of individual(ID), full sib famly(F) and index(IX) were examined for one five generations in high 21 days pupal weight of tribolium castaneum.

• 用个体选择法（ID）、家系选择法（F）和指数选择法（IX）三种选择方法，对赤拟谷盗21日龄蛹重向上选择，以对比各方法间在进行一个世代选择和多个世代选择时有何不同。