Comparison of cold resistance between golden leaf elm and Siberian elm
To compare the difference of cold resistance between golden leaf elm and Siberian elm, the changes of germination rate,relative electric conductivity,injury rate,POD activity,and MDA and soluble protein contents of one-year shoots in both elm varieties were studied under artificial low temperature conditions.The results indicated that with the temperature decreasing, the germination rates of one-year shoots in both elm varieties were decreased while their injury rates and relative electric conductivities were increased, though the variation extents of these physiological indexes in Siberian elm were larger than those in golden leaf elm; The MDA and soluble protein contents presented an upward trend,but the MDA content in Siberian elm was higher than that in golden leaf elm, while the soluble protein content in Siberian elm was lower than that in golden leaf elm. The comprehensive a-nalysis showed that the cold resistance of golden leaf elm was higher than that of Siberian elm.
Golden leaf elmSiberian elmCold resistanceElectric conductivitySoluble protein
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