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Ecophysiological and biochemical changes in Abelmoschus esculentus (L.) Moench under chromium stress

100%

Unnikannan P., Vedhanarayanan P., Sundaramoorthy P.

International Letters of Natural Sciences

2014

tom 02

Increasing concentrations of chromium caused reduction in growth, chlorophyll contents and mineral mutrients of bhendhi. At increasing concentrations of chromium, all the attributes were found to be reduced. Chromium is one of the toxic elements discharging from tannery industry. The long disposal of tannery effluent to the agricultural land causes serious damages in the soil texture; reduce the growth of microorganisms and agricultural crops. Large areas of Vellore district of Tamilnadu was seriously affected by the tannery effluent irrigation to the agricultural land. The present study was conducted to identify the phytotoxic effect and physiological changes of Abelmoschus esculentus (L.) Moench under the treatment of different concentrations of chromium solutions (2.5, 5, 10, 25, 50, 75 and 100 mg/l). The result shows that there was a gradual reduction in the morphological parameters (root length, shoot length, fresh weight and dry weight). Similarly the photosynthetic pigments (Chlorophyll and carotenoid) and biochemical parameters such as protein, amino acid, and sugars were also gradually decreased with increasing concentrations of chromium.

The responses of stomatal parameters and SPAD value in Asian tobacco exposed to chromium

80%

Orcen N., Nazarian G., Gharibkhani M.

Polish Journal of Environmental Studies

2013

tom 22

nr 5

In this study, the responses of Asian tobacco varieties to chromium stress were investigated. To determine the responses arising from genotypic differences, Basma and Dubek varities were used. Basma was suitable for removing Cr from soil and was more tolerant than Dubek to chromium stress. A significant variation in stomatal characters, except for stomatal width, was observed in both varieties. In parallel with the increasing doses of Cr, stomata density significantly increased in both genotypes. Also, it was observed that stomatal length decreased with increases in Cr dosage. The increase in Cr concentration leads to decrease in SPAD value. It was observed that the SPAD value of Basma was more than Dubek in control plants. The correlation of stomatal parameters with each other and SPAD values were also calculated. A negative correlation was found between the SPAD value and stoma density in both varieties. Also, a positive correlation was observed between SPAD value and stomatal length. There was a significant negative correlation between stoma density and stomatal length.

Ograniczanie wyników

1 International Letters of Natural Sciences

1 Polish Journal of Environmental Studies

1 Gharibkhani M.

1 Nazarian G.

1 Orcen N.

1 Sundaramoorthy P.

1 Unnikannan P.

1 Vedhanarayanan P.

1 2014

1 2013

Wyniki wyszukiwania

Ecophysiological and biochemical changes in Abelmoschus esculentus (L.) Moench under chromium stress

The responses of stomatal parameters and SPAD value in Asian tobacco exposed to chromium