• B.Sujatha
• A.Satya Gowri Parvathi

Zinc is one of the essential micronutrient for plant growth and development. In addition, zinc is a heavy metal and too much zinc can cause toxicity in most plants. Heavy metals due to industrial activities and frequently use of chemical fertilizers cause damage to the plants. In this study examined the effect of different concentrations of Zn control (2ppm), contaminated area-1 50ppm and contaminated area-2 100ppm on chlorophyll a, b, starch, total soluble sugars, reducing, non reducing sugars, starch and amylase content in Cajanus and sorghum. The results showed that that high zinc concentrations, decrease of photosynthetic pigments such as chlorophyll a, b, and soluble sugars, reducing, non reducing sugars, starch were decreased with increase in Zn concentration. Amylase activity also decreased with increasing Zn but slightly increase in leaf at the stage of post flowering in both the plants Cajanus and sorghum.

Zinc, toxicity, sugars, chlorophyll, amylase, Cajanus and Sorghum.

"EFFECTS OF SOIL ACCUMULATED ZINC ON CHLOROPHYLL AND CARBOHYDRATE METABOLISM OF CAJANUS CAJAN (L.) AND SORGHUM BICOLOUR (L.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.667-678, June-2019, Available :http://www.jetir.org/papers/JETIR1906E50.pdf

"EFFECTS OF SOIL ACCUMULATED ZINC ON CHLOROPHYLL AND CARBOHYDRATE METABOLISM OF CAJANUS CAJAN (L.) AND SORGHUM BICOLOUR (L.)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp667-678, June-2019, Available at : http://www.jetir.org/papers/JETIR1906E50.pdf