Abstract: Effect of temperature on the eui gene expression of TGMS rice Changxuan 3S were analyzed under the condition of natural ecology and different artificial temperature. The results were as following: There was a negative correlation between panicle elongation and natural temperature at 9-20 days before flowering, and the negative correlation of the panicle elongation with mean diurnal temperature at 12-17 days (from pollen mother cell formation to meiosis) before flowering was the most significant. In the thermo-sensitive period of the eui gene, when Changxuan 3S was treated with the condition of constant 22℃,24℃,26℃,28℃, the eui gene could express under the treatment of 22℃, 24℃, 26℃, respectively, and the lower the temperature treated, the longer the panicle elongation was, while the expression of the eui gene was inhibited at temperature 28℃.

Key words: Rice (Oryza sativa L.), Thermo-sensitive genic male sterile (TGMS), Elongated uppermost internode (eui), Temperature, Correlation