Changes of ATPase activity,ATP and ABA content in storage roots during storage root thickening of sweet potato Current Progress in Studies on Post-harvest Physiological Deterioration of Cassava Storage Roots Comparison of Root Characteristics and Sugar Components in Root and Leaf at Early Growth Phase of Sweet Potato Varieties with Significant Difference in Valid Storage Root Number Effects of potassium on the parenchyma cell structure of storage root,the distribution of 14C photosynthates and yield in sweet potato Anatomy of An Ephemeroid Plant Eremurus altaicus Effect of potassium on related enzyme activities in sugar metabolism of edible sweet potato EFFECTS OF THE SOIL AERATION ON NUTRIENT ABSORPTION, ~(14)C-ASSIMILATES DISTRIBUTION AND STORAGE ROOT YIELD IN SWEET POTATO Physiological Basis of Improving Soluble Sugar Content in Sweetpotato for Table Use by Humic Acid Application