Progress in vitamin E synthesis-related enzyme gene cloning and stress physiology in plants 1Correlation Analysis between Gene Expression of Isoflavone Synthesis Relative Enzymes and Isoflavone accumulation During the Seed Development in Soybean Optimization of genetic transformation system of potato and introduction of maize starch branching enzyme gene SBEⅡb into potato ANALYSIS OF GENE EXPRESSION OF ENZYMES INVOLVED IN STARCH SYNTHESIS AND ENZYMES ACTIVITY IN WHEAT GRAIN Advances in studies on strategies of enhancing plant triterpene saponin synthesis by cell and gene engineering technology