Additionally, no significant differences were observed between the Mn contents in the central and
the lower parts. The distribution of Zn and Mn in our study can
be compared with the results obtained for the potato tubers
(Subramanian et al., 2011). In the potato, they exhibited a dorsoventral polarity where the mineral content was higher in the slice
of the tuber which was nearest the soil’s surface (the corresponding parts of taro corm would be the marginal and upper parts). The
copper metabolism is interlinked with the iron metabolism and is
also significant in redox reactions (Hänsch & Mendel, 2009).