大白菜种子保纯的技术要点１亲本种株要纯正近些年生产上应用的大白菜种子，绝大多数是杂种一代，其杂交亲本都是科研部门选育的自交不亲和系，每个亲本都有其一定的典型性状，如果制种所用的原种培育的种株不符合该亲本的特征特性或者混杂，那么所生产的杂种一代，必然不... The main technical points of pure Chinese cabbage seed 1 The parent strain should be pure In recent years, the production of Chinese cabbage seed application, the vast majority of the hybrid generation, the hybrid parents are self-incompatible selection of scientific research departments, each A parent has its own typical characteristics, if the seed used in seed production breeding strain does not meet the characteristics of the parent or mixed, then the generation of hybrid generation, must not ...