Abstract: In order to provide metabolism evidence for ecology and safety assessment of transgenic Bt rice, several important materials in transgenic Bt rice "Shanyou 63" with cry1Ab/cry1Ac genes and non-transgenic "Shanyou 63" without cry1Ab/cry1Ac genes were analyzed. Results showed that the contents of most amino acids in stems and leaves of transgenic Bt rice "Shanyou 63" and in non-transgenic rice "Shanyou 63" had significant or highly significant differences at heading stage. And during the majority growth stages, the contents of N, P and Si in two rice lines had significant or very significant difference, but their trends of change with time were basically accordant: The contents of N and P gradually decreased after stem-drawing stage, while the contents of Si gradually increased with the growth of rice. In the early growth stage, water-soluble sugar and reducing sugar contents in transgenic Bt rice "Shanyou 63" were significantly lower than those of non-transgenic "Shanyou 63", but in late growth stage, were significantly higher than those of non-transgenic "Shanyou 63".

Key words: Transgenic Bt rice, Amino acid, Nitrogen, Phosphor, Silicon, Water-solubility sugar, Reducing sugar