But the male sterile trait is easy to be influenced by unpredicted low temperature during its fertility sensitive stage, it decrease seed purity of hybrid rice and lim.

• 但是,光温敏核不育系在敏感期内若遇上低温天气则会发生育性恢复而自交结实,从而使制种的纯度降低,严重制约了两系法杂交水稻的发展。