Ak. Tripathi et S. Tripathi, Changes in same physiological and biochemical characters in Albizia lebbekas bio-indicators of heavy metal toxicity., J ENVIR BIO, 20(2), 1999, pp. 93-98
An investigation was conducted to study the differential action of heavy me
tals such as Ni (II), Cr (VI) and Hg on biochemical and chemical parameters
of Albizia lebbek. Significant reduction (P < 0.001) in chlorophyll, prote
in, carbohydrate and sugar in leaves was observed which was positively and
significantly correlated with leaf area, root-shoot length and biomass of p
lant. Polyphenol, proline, ascorbic acid and nitrate reductase activity of
leaves were significantly (P < 0.001) increased over control and negatively
correlated with, root-shoot length, leaf area and biomass of plant, showin
g stress on plants. This concentration dependent change was observed in mos
t of the, parameters. Hence,. the physiological and biochemical traits may
serve to determine suitable bio-indicators of heavy metal pollution and to
select protection species.