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Effect of nickel toxicity in Hyptis suaveolens (L.). Poit. and Helianthus annuus L

, : Effect of nickel toxicity in Hyptis suaveolens (L.). Poit. and Helianthus annuus L. Indian Journal of Plant Physiology 1(3): 153-156

Exposing Hyptis suaveolens and sunflowers to 200-800 ppm Ni increased leaf Ni content and disrupted metabolism. The concentration of soluble nitrogen and protein decreased, whereas reducing sugar and starch contents were markedly higher than the control in both species. In Ni treated plants, catalase activity decreased while peroxidase and polyphenol oxidase activity increased.

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