Seedling of mungbean (Vigna radiate) were raised in the pots
to evaluate the effect of lead on growth, chlorophyll and nitrate reductase
activity. The plants grown with increasing level of lead were reduced
in germination in and growth compared to control plants. Chlorophyll content,
carotenoids, soluble protein and organic nitrogen contents remained almost
unaffected at lower concentration of lead tested. Enzyme activity in
vitro and in vivo in excised leaves showed marked increase
at lower concentration of lead. Chlorophyll carotenoids soluble protein
and organic nitrogen contents remained almost unaffected at lower concentrations
of lead tested. Thus lead shows the inhibition or reduction in growth
and germination at higher concentration thus leads the decrease in chlorophyll
level also. Inhibition in enzyme activity (in vitroand in vivo)
also reported in excised and intact mungbean in presence of lead. It seems
that nitrate reductase has a different response towards lead pollution
in which is more tolerant to lead pollution Vigna radiata.
Rakesh Singh Sengar, Madhu Gautam, Sanjay Kumar Garg, Reshu Chaudhary and Kalpana Sengar, 2008. Effect of Lead on Seed Germination, Seedling Growth, Chlorophyll Content and Nitrate Reductase Activity in Mung Bean (Vigna radiata). Research Journal of Phytochemistry, 2: 61-68.