EFFECT
OF ARSENIC CONCENTRATION ON THE ACCUMULATION OF MINERALS WITHIN ROOTS AND
LEAVES OF RICE SEEDLINGS
M. M. Hossain*, S. Yesmin, G. K. M.
M. Rahman, M. T. Islam, M. M. Rahman and M. J. Uddin
*Corresponding author;
Email: soilsaudhaka@yahoo.com
Abstract
A hydroponic experiment was
conducted in Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur
from March to April, 2012 to observe the effect of arsenic concentration on
accumulation of minerals within rice seedlings. Seedlings were treated with
0.6, 1.2 and 1.8 ppm of arsenic (As) along with full Hoagland solution for 14
days in net house condition. Our experiment result indicated that arsenic was
mostly concentrated in roots and a little amount was moved to shoots,
indicating that arsenic was not easily translocated to shoots of rice
seedlings. Accumulation of P, K, Fe, Ca, Mg, Mn, Zn and Cu decreased in leaves
significantly with increasing the arsenic dose indicating that rice seedlings
are As-sensitive and As-toxicity depends on the arsenic concentration in the
rooting medium. In root, accumulation of P, K and Mn decreased but accumulation
of Ca and Cu increased with increasing arsenic concentration. Mg accumulation
increased in root at 0.6 ppm arsenic concentration and decreasing in root at
high arsenic concentration (1.2ppm and 1.8ppm). Fe and Zn accumulation
increased with increasing arsenic concentration and at high concentration of
arsenic (1.8ppm) accumulation of Fe and Zn decreased.
Keywords:
Arsenic,
nutrients, accumulation and rice.
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Return Volume: Journal of
Experimental Biosciences 6(1): January 2015
