Environmental Science Lab., Department of Botany, Kisan P.G.
- 245 207, India
M.A. Ali Khan
Science Lab., Department of Botany, Kisan P.G.
- 245 207, India
26 February 2011
An attempt has been made to assess the response of Phaseolus mungo L.
under influence of cadmium chloride (Cd Cl2) with special reference to growth,
morphology, yield and biochemical aspects. Surface sterilized seeds of Phaseolus mungo L.
cv. T-9 were exposed to various concentrations of Cd Cl2 solution (10-2
M, 10-4 M, 10-5 M, 10-8 M and control) for
12 hr at room temperature and these seeds were transferred to petriplates and polythene bags in triplicate. 10-2
M conconcentration was found to have deleterious
effects on seed germination, germination relative index, length and dry
weight of root and shoot, shoot root ratio and seedling vigour
index, plant height, phytomass, number of leaves
and branches, leaf area and chlorophyll contents while 10-8 M
revealed slightly promotory effects. Phytotoxicity percentage and chlorophyll stability index
were maximum in (10-2 M) concentration, while minimum in 10-8
M conconcentration of Cd Cl2. Nitrate and nitrite reductase
activity was markedly inhibited at higher conconcentration.
Low dose of Cd (10-8 M) did not affect
soluble sugar contents of seeds but it induced a significant increase at
higher conconcentration (10-2 M). It
however, did not affect protein contents of seeds accept at higher
Phaseolus mungo, Cadmium, Nitrate reductase activity, Sugar and protein contents
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