Cloning and Characterization of Dehydrins Gene SlDHN2b in Tomato Effects of tricyclazole on the pathogenicity of Setosphaeria turcica Study on Cold-stress Tolerance of Transgenic Alfalfa (Medicago sativa L.) with AmDHN Gene Isolation and Expression Analysis of DHN Gene in Loquat Fruit Under Cold Stress Isolation and Expression Analysis of DHN Gene in Loquat Fruit Under Cold Stress Cloning and Characterization of Dehydrins Gene SlDHN2b in Tomato Cloning and Expression Characteristics of a Novel Dehydrin Gene from Hazelnut(Corylus heterophylla Fisch.)