Two japonica rices, Wuyujing 3 and 97 7 were used to study changes in contents of soluble protein, free amino acids and endopeptidase activity during photosynthetic declination.

• 以两个粳稻品种武育粳3号和97-7作材料研究了光合功能衰退进程中叶片中可溶性蛋白质、游离氨基酸和内肽酶活力的变化。