Mg tended to be more concentrated in the upper and the central
part of the corm (Fig. 2), with mean values of 1068 mg kg
1
and
1124 mg kg
1
, respectively. No significant differences were
observed between the Mg contents in the upper and the central
parts. Additionally, no significant differences were observed
between the Mg contents in the lower (906 mg kg
1
) and the marginal parts (902 mg kg
1
). The influence of the cultivar was very
high (Table 3). The cultivars Vu 105 and Vu 1822 exhibited the
lowest Mg contents (787 and 766 mg kg
1
, Higher concentration
of Mg in the upper and the central parts can be explained by the
mobility and translocation of this mineral. During growth, it is
transported from the leaves to the main sink tissues – i.e., the
parenchymatic tissue of the upper part of the corm which successively becomes the central part.