A study on the uptake of trivalent and hexavalent chromium by paddy (Oryza sativa): Possible chemical modifications in rhizosphere

被引：36

作者：

Mishra, S ^{[1
]}

Shanker, K ^{[1
]}

Srivastava, MM ^{[1
]}

Srivastava, S ^{[1
]}

Shrivastav, R ^{[1
]}

Dass, S ^{[1
]}

Prakash, S ^{[1
]}

机构：

[1] DAYALBAGH EDUC INST,FAC SCI,DEPT CHEM,AGRA 282005,UTTAR PRADESH,INDIA

来源：

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | 1997年 / 62卷 / 01期

关键词：

chromium uptake and translocation; Paddy; oxidation-reduction; sand and soil culture; rhizosphere chemistry;

D O I：

10.1016/S0167-8809(96)01105-X

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The uptake and translocation of chromium by paddy (Oryza sativa L. Arbario) was studied using radiotracers. Chromium was supplied as Cr III and Cr VI through irrigation water and plants were grown in sand and soil culture. The uptake of chromium for both the oxidation states and culture types was found to increase more or less linearly with the increase in chromium concentration though with different slopes. The rate of increase of the uptake when compared to the increase in feed concentration indicates that the uptake by roots is mediated possibly through a passive mechanism. For a given concentration of feed, values of chromium in mu g g(-1) dry matter in shoot and grain did not vary significantly either for different oxidation states of feed chromium or culture type. The order of uptake for paddy shows a considerably different pattern when compared to onion, maize and groundnut. This has been qualitatively explained on the basis of the different chemistry of chromium in the rhizosphere of paddy. The amount of chromium translocated to grain was also considerably less compared to the other three crops.

引用

页码：53 / 58

页数：6

共 27 条

[1]

[Anonymous], COMM BIOL EFF ATM PO

[2]

BARKLETT RJ, 1988, CHROMIUM NATURAL HUM, P267

[3] CHROMIUM CYCLING IN SOILS AND WATER - LINKS, GAPS, AND METHODS [J].

BARTLETT, RJ .

ENVIRONMENTAL HEALTH PERSPECTIVES, 1991, 92 :17-24

[4]

BOULTON J, 1975, ENVIRON POLLUT, V9, P295

[5]

Cary E. E., 1982, Biological and environmental aspects of chromium, P49

[6]

CARY EE, 1983, J ASSOC OFF ANA CHEM, P850

[7] ORGANIC-CONSTITUENTS AND COMPLEXATION OF NICKEL(II), IRON(III), CADMIUM(II), AND PLUTONIUM(IV) IN SOYBEAN XYLEM EXUDATES [J].

CATALDO, DA ;

MCFADDEN, KM ;

GARLAND, TR ;

WILDUNG, RE .

PLANT PHYSIOLOGY, 1988, 86 (03) :734-739

[8]

DESMET E, 1975, BEHAV CHROMIUM AQUAT, P43

[9]

*EPA, 1984, HLTH ASS DOCUMENT CH

[10]

Greenberg A.G., 1985, STANDARD METHODS EXA

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