Abstract
In order to study the physiological relations between panicle bearing shoots and barren shoots in rice plant, some experiments were carried out using radioactivephosphorus (P32). P32 absorbed through the leaf surface was transferred from barren shoots to panicle bearing shoots, but not from the latter to the former. Two experiments were undertaken in order to know the cause of the translocation of P32 mentioned above, and this translocation of P32 might be understood from the facts that the metabolic activity of panicle bearing shoots is stronger than that of barren shoots.
