Effect of exogenous zinc supply on photosynthetic rate, chlorophyll content and some growth parameters in different wheat genotypes

Bharti, K. and Pandey, N. and Shankhdhar, D. and Srivastava, P.C. and Shankhdhar, S.C. (2014) Effect of exogenous zinc supply on photosynthetic rate, chlorophyll content and some growth parameters in different wheat genotypes. Cereal Research Communications, 42 (4). pp. 589-600. ISSN 0133-3720

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Abstract

A two-year field experiment was conducted to study the effect of three zinc levels 0, 20 kg ZnSO₄ ha⁻¹ and 20 kg ZnSO₄ ha⁻¹ + foliar spray of 0.5% ZnSO₄ solution on plant height, leaf area, shoot biomass, photosynthetic rate and chlorophyll content in different wheat genotypes. Increasing zinc levels was found to be beneficial in improving growth and physiological aspects of genotypes. Soil application + foliar spray proved to be the best application in improving all the parameters. Zinc application brought about a maximum increment limit of 41.8% in plant height, 101.8% in leaf area, 86% in shoot biomass and 51.1% in photosynthetic rate irrespective of stages and year of study. A variation was found to occur among genotypes in showing responses towards zinc application and PBW 550 was found to be more responsive.

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