CHANGES IN PHYSIOLOGY AND BIOCHEMISTRY OF GUAVA LEAVES UNDER LOW-TEMPERATURE STRESS Effect of pre-treatments with SA、H2O2 and 6-BA on chilling tolerance in Zoysia matrella Effects of GMPase Overexpression on Ascorbic Acid Content and Relative Index to Low-temperature Tolerance in Tomato Plants Effects of GMPase Overexpression on Ascorbic Acid Content and Relative Index to Low-temperature Tolerance in Tomato Plants Adaptability of Cucurbita moschata Duch. seedlings to low-temperature stress Effects of Low-temperature Stress on the Ascorbate-glutahione Cycle in the Grafted Cucumber Leaves Effects of Low-temperature Stress on the Ascorbate-glutahione Cycle in the Grafted Cucumber Leaves Inductions of Coronatine and MeJA to Low-temperature Resistance of Wheat Seedlings Isolation and Analysis of Differentially Expressed Genes from Peanut under Low-Temperature Stress Effects of exogenous glycine betaine on the physiological characteristics of Zoysia japonica under low-temperature stress