Effects of sulphur deficiency on accumulation of K+, Na+, NO3-, PO43- and transport of K+, Na+ in mungbean (Vigna radiata l. var. bari mung‐6)

Abstract

Sulphur deficiency caused a decrease in accumulation of Na+ but increased
the accumulation of K+ in the root, stem and leaf of mungbean seedlings grown in
solution culture under light bank. It also decreased K+ and Na+ accumulation in
the root, stem and leaf of mungbean plants grown in sand culture under natural
environmental conditions. However, sulphur deficiency increased the accumulation
of NO3‐ in the root and stem but decreased that in leaf of mungbean
seedlings grown in solution culture. It decreased accumulation of PO43‐ in the
root, stem and leaf except an initial increase in the leaf. It increased net influx,
long distance transport and transport index of K+ but decreased those of Na+ in
mungbean seedlings. This result indicates that K+ is more mobile in plants than
Na+.