Studies on therelationship between grain sink activity ofJaponica/Indica hybrid rice and its grain filling DIURNAL CHANGES IN SINK UNLOADING OF (14) ̄C- ASSIMILATES FROM FLAG LEAVES OF SPRING WHEAT DUKING GRAIN FILLING STAGE ADJUSTMENT OF PLANT GROWTH REGULATORS IN SOURCE-SINK RELATIONSHIP DURING GRAIN FILLING OF WINTER WHEAT Relationship of Inferior Kernel Setting with Sink Strength under Controlling Pollination Endogenous hormone content in relation to thickening of carrot fleshy root during summer season in plateau region EFFECT OF SOURCE SINK MANIPULATION ON PHOTOSYNTHETIC RATE AND PARTITIONING OF 14 C ASSIMILATE DURING GRAIN FILLING IN WINTER WHEAT PLANT The Relationships between Diversity of Dynamic Changes about Wheat Canopy Temperature and Source-sink Activity in Filling Stage