1991 Volume 40 Issue 3 Pages 107-111
Element distribution in barley leaves grown for 46 days was measured. Within a leaf, Mn, P, Mg and Ca tended to be accumulated drastically at the tip part of the leaf, whereas the amount of Cl and K was high at the bottom part of the leaf. The concentration of Na within a leaf was almost constant. According to the age of the leaf, when the leaf gets senescent, the concentration of the elements became higher generally. In the case of K, Mg, Mn and P, however, there was the maximum concentration at the elder and eldest leaves their contents became lower. Photosynthetic activity in leaf was evaluated by measureing the mRNA amount of RuBisCO (ribulose 1, 5-bisphosphate carboxylase/oxygenase) . The photosynthetic activity was higher at the tip part of the leaf and it was higher at the younger leaf.
