International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (163) Last page : (170)
Article doi: http://dx.doi.org/10.18782/2320-7051.5477
Morphological Characters of Maize (Zea mays L.) Genotypes to Elevated Carbon Dioxide and Temperature Regimes
Adishesha1*, K., Janagoudar2, B. S., Amaregouda1, A., Shanawad3, U. K. and Chandranaik1, M.
1Department of Crop Physiology, University of Agricultural Sciences, Raichur-584104
2Department of Crop Physiology, University of Agricultural Sciences, Dharwad-580001
3Department of Agronomy, University of Agricultural Sciences, Raichur-584104
*Corresponding Author E-mail: adishesha1144@gmail.com
Received: 19.08.2017 | Revised: 1.09.2017 | Accepted: 02.09.2017
ABSTRACT
The amount of carbon dioxide (CO2) of the earth´s atmosphere is increasing, which has the potential of increasing greenhouse effect and air temperature in the future. Plants respond to environment CO2 and temperature. Therefore climate change may affect agriculture. The purpose of this paper was to study the morphological response of maize genotypes to elevated carbon dioxide and temperature regimes. Most of the morphological, physiological, biochemical and biophysical parameters indicated better performance under elevated CO2 regime as compared to elevated temperature regime at all growth stages. This was mainly because of exposure of the crop to elevated temperature regime and the heat stress was documented to have detrimental effects on plant growth and events involved in the growth and development of reproductive organs, such as tassel initiation, time of flowering, pollination, fertilization, and pollen sterility in maize. Various morphological parameters studied indicated that, the genotypes HTMR-1, 900M-GOLD and HTMR-2 performed better under elevated CO2 and temperature regime. The maximum reduction with respect to these parameters was observed in ARJUN and NK 6240 genotypes.
Key words: Climate change, Elevated CO2, Maize genotypes and temperature regimes
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Adishesha, K., Janagoudar, B.S., Amaregouda, A., Shanawad, U. K. and Chandranaik, M., Morphological Characters of Maize (Zea mays L.) Genotypes to Elevated Carbon Dioxide and Temperature Regimes, Int. J. Pure App. Biosci.5(5): 163-170 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5477
