National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Increasing atmospheric CO2 concentration has led to concerns about global changes to the environment. One area of global change that has not been fully addressed is the effect of elevated atmospheric CO2 and temperature regimes on agriculture production inputs. Maize (Zea mays L.) is the most important grain crop is produced throughout the country under diverse environments. A study was conducted to evaluate the seasonal comparison (summer and Kharif 2015) of bio-physical parameters (photosynthetic rate, transpiration rate, stomatal conductance and NDVI) to elevated carbon dioxide and temperature regimes raised in open top chamber with different concentrations of CO2 levels (normal CO2, 550ppm,) with different temperatures regimes (+2°C). Among the genotypes NK 6240, HTMR-1 and 900 M-GOLD genotype recorded maximum transpiration rate and stomatal conductance whereas, the genotypes HTMR-2 and ARJUN had least transpiration rate and stomatal conductance. The results showed that maize genotypes grown in kharif season performed better compared to summer season with respect to bio-physical parameters.
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