モモにおける同化物質の枝梢及び果実への転流と蓄積について

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  • モモにおける同化物質の枝梢及び果実への転流と蓄積について(農学)
  • モモ ニ オケル ドウカ ブッシツ ノ シショウ オヨビ カジツ ヘ ノ テ
  • Translocation of labelled compounds from leaves into shoot and fruit with their conversion in peach trees (Agriculture)

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Distribution of photosynthates from leaves into shoot and fruit was studied at differrent stages in potted 3-year old peach trees which were exposed to ^<14>CO_2 at different stages of fruit development. In the first experiment, separated each shoot was sampled 6 and 10 hours after ^<14>CO_2 feeding and the ^<14>C activities in the ethanol soluble fraction were measured. In the second experiment, extracts from fruits in the ethanol soluble fraction were sampled 1,2,3 and 4 day after ^<14>CO_2 feeding at four different stages in development fruit, they were separated into individual compounds by using paper chromatography, and then the ^<14>C activities were estimated. The results were summarized as follows; 1. Sorbitol was the major carbohydrate being translocated in peach phloem by using infrared spectrophotometer, paper-chromatography and gas-liquid chromatography. 2. It suggested that translocated sorbitol into the fruit was converted mostly into sucrose. 3. The distribution ratio of ^<14>C into sugar and organic acids fractions in the fruit varied at different stages of fruit development.

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