Effects of Temperature on Sugar Accumulation and Sucrose-metabolizing Enzymes in Muskmelon

This paper studied the effects of different temperature on sugar accumulation and sucrose-metabolizing enzymes in muskmelon.The results showed that the stronger the temperature was the fructose and soluble sugar contented in the fruits were higher,while the activity of zymose also increases with the increase in light intensity.Sucrose content,sucrose phosphate synthase activity,as well as sucrose synthase activity share the same trend when the temperature change.During the early and middle development stage,the values of these three indexes decrease when the temperature was stronger.But in the mature period,values of these three indexes increase with the higher temperature.There was a significant difference between the treatments of natural temperature +6～7℃ and natural light while the difference between the treatment of natural temperature +3～4℃ and natural light was not obvious.