The fluctuation of above physiological data activity indices for Liangyoupeijiu were larger than Yangdao 6 in early grain filling stage, and smaller in late stage (except for MDA content in leaf).

• 两优培九结实前期诸活性指标变幅大于扬稻6号，除叶片MDA含量外，结实中后期活性均较扬稻6号低；