[Identification of wheat varieties by FTIR spectrum].

The spectra of eight kinds of wheat roots were determined by FTIR spectrometry and the absorption peaks were analyzed. Results from the comparison of the spectra showed that there were some differences in the shape, wave number and the number of absorption peaks of their spectra within the same range of wave number. The spectra of different wheat varieties exhibited remarkable differences. The first difference was in the region of 2800-2980 cm(-1) which mainly reflected the stretching vibration of methyl and methylene, the length of molecular chain of compound, and the molecular weight. The second difference existed in the region of 1510-1730 cm(-1), which mainly reflected the substituent nature of amide N and alpha-C. The major differences of spectra in this region might result from the differences in genes. So FTIR spectra could be used for the identification of wheat varieties.