[An analysis of sweet pepper seeds with space flight mutagenesis by FTIR]

The first-time application of FTIR to analyzing and comparing two sweet pepper seeds lines of space mutation and two sweet pepper seeds lines bred in system approaches as well as their spectra is presented. The IR spectrum of sweet pepper seeds lines is mainly composed of the band of adsorption of protein and that of carbohydrates. The absorbance of the two sweet pepper seeds lines of space mutation at 2854, 1652, 1542 and 1160-1062 cm(-1) was enhanced. The peak near 2854 cm(-1) is attributable to the stretching vibration of CH2--, The dominating bands near 1652 and 1542 cm(-1) were assigned to amide I and amide II respectively. The absorbance at 1160 cm(-1) is attributable to the stretching vibration of C--O on the structure of carbohydrates. The major components and the structures remained intact, indicating that the space environment can increase carbohydrates and protein content of sweet pepper seeds lines.