Four lines of rice cultivar including one salt tolerant and three salt sensitive lines were used to study POD isozymes and protein changes after treatment of salt and radiation. POD 3 was induced in the root of salt tolerant line 9343, while POD 1 was absent in salt sensitive lines 1187, Zhong Zuo93, and Zhong Zuo321 after salt treatment. The presence of POD 3 in salt tolerant line and the absence of POD 1 in salt sensitive lines, therefore, may be used to evaluate the salt tolerance in rice. The...