Translocation of Mineral Nutrients in Higher Plants (Part 4) : Distribution of Phosphorus Absorbed by Rape and Sesame Plants at Fruiting stage

Abstract

The translocation of P^<32> absorbed at fruiting stage were investigated. The crops used in this experiments were grown by sand culture. 1. Rape plants accumulated P^<32> in seeds during three weeks after flowering, then accumulation declined rapidly. 2. P^<32> absorbed at ripening stage is uniformly distributed to each branch in the case of normal culture, but P^<32> accumulated unevenly at low phosphorus supply. 3. We found that P^<32> absorbed by the sesame plant translocated into seeds through leaves and husk. The P^<32> was found in the ether soluble fraction (phosphatide) of the seed in only 5 hrs. after treatment.