Degradation of Storage Photosynthates in Isolated Spinach Mesophyll Cells in CO2-Free System and Its Regulatory Factors Photosynthate integration and regulation within clones of buffalograss under heterogeneous water supply Effect of different potassium application time on the vigor of photosynthate transportations of edible sweet potato (Ipomoea Batata L.) EFFECT OF SINK-SOURCE RELATIONSHIPS ON PARTITIONING OF14C PHOTOSYNTHATES IN CHINESE DATE(ZIZYPHUS JUJUBA) OPTIMAL ALLOCATION OF PHOTOSYNTHATES BETWEEN VEGETATIVE AND REPRODUCTIVE PARTS OF ANNUAL PLANTS WITH CONSTANT GROWTH PERIOD