Effect of Chilling Stress on Physiological and Biochemical Indexes of Corn at Seed Germination and Seedling Growth Stage
Effect of different low temperature on physiological and biochemical indexes of corn had been studied for timely sowing in seed germination and seedling growth.Six average temperatures were designed as 4℃,6℃,8℃,10℃,12℃ and 15℃,and two varieties of corn 'Xianyu 335' and 'Zhengdan 958' were used.The result showed that corn seed germination and seedling growth were damaged under 8℃.Soluble protein content had no obvious change in corn seed,MDA content and POD activity increased,but SOD activity and CAT activity dropped rapidly under 8℃.Corn seed could not grow and develop normally above 10℃.Soluble protein content was reduced in corn seed with the increase of temperature.Seed germinating rate at 15℃ was better than at 12℃.
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万方数据
维普
