Amount of potassium application in relation to AM fungus inoculation efficiency RESEARCH OF TUBE STORAGE TECHNIQUE AND ITS EFFECTS OF TABACCO CONTAINED VIRUSES Effect of Different Exogenous Additives on the Quality of Upper Tobacco Leaves Before Curing Stage EFFECTS OF CADMIUM AND IRON ON THE SOME PHYSIOLOGICAL INDICATORS IN LEAVES OF TOBACCO Expression and Secretion of Bacillus subtilis Fibrinolytic Enzymic (BSFE) Gene from Transgenic Tobacco Tissues Cloning and expression vector construction of cucumber LDC and transformation to tabacco