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Abstract
Hign yielding F1 hybrid rice translocated 32P to their tillers more effectively than did their parents. Tiller number and 32P concentration in tillers were significantly correlated (r=0.61*). The regression of tiller numDer ana 32P distributed in tillers was Y=0.06x + 1.18.
The 35S translocated and distributed in tillers and panicles of F1 hybrid rice was not positively correlated with grain yield.
Translocation of 32P, 35 S and 14C‐glucoses to panicles of a male sterile line was lower than in the F1 hybrid and showed a progressive decline between the booting and milky stages. Tnis represents a metabolic disorder associated witn male sterility.
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