Fig. 2From: Radial movement of sapwood-injected rubidium into heartwood of Japanese cedar (Cryptomeria japonica) in the growing periodRb content and Rb/K in Rb-injected Kumotooshi cultivar at 10 days after the treatment. KT1 (left) and KT2 (right). Note that vertical axes are in logarithm to compare the wide range of Rb content and Rb/K among Figs. 2, 3 and 4. Circles Rb content, white bars Rb/K in sapwood, gray bars Rb/K in heartwoodBack to article page