Abstract: The male sterility fluctuation of photo-thermo-sensitive genic male sterile (PTGMS) lines under low temperature is an important problem troubling two-line system hybrid rice.

• 文摘:光温敏核不育系的不育性受温度影响而波动是困扰两系法杂交水稻的一个重要问题，就怎样解决这一问题提出了看法。