International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (1478) Last page : (1490)
Article doi: http://dx.doi.org/10.18782/2320-7051.5704
High Temperature Stress Effected the Biochemical Parameters of Rice (Oryza sativa L.) Varieties and Hybrids
R. Ramesh1*, T. Ramesh1, P. R. Rao2, V. G. Shankar3 and M.H.V. Bhave4
1Department of Crop Physiology,3Department of Genetics and Plant breeding,
4Department of Statistics and Mathematics,
College of Agriculture PJTSAU, Rajendranagar, Hyderabad-500030, Telangana, India
2Division of Plant Physiology, Indian Institute of Rice Research, Rajendranagar, Hyderabad - Telangana, India
*Corresponding Author E-mail: rameshpphy@gmail.com
Received: 2.08.2017 | Revised: 11.08.2017 | Accepted: 12.08.2017
ABSTRACT
Climate change associated phenomenon especially high temperature has become an important constraint for rice production. To develop high temperature tolerant rice genotypes, thorough understanding of genetics, biochemical and physiological processeshas become essential for identification and selection of traits and to enhance tolerance mechanism. In this connection, an experiment was formulated to study the effect of high temperature stress onbiochemical parameters of rice (Oryza sativa L.) varieties and hybrids. This was conducted for two consecutive kharif seasons 2012 and 2013 at Indian Institute of Rice Research, Rajendranagar, Hyderabad. The biochemical parameters like Enzyme activity- Peroxidase(POD),Superoxide dismutase (SOD), and Catalase (CAT) activity was estimated in control as well as stressed condition at vegetative stage and reproductive stages. The results revealed that the temperature acclimated plantscompared to non-induced (control) showed higher peroxidase, super oxide dismutase and catalase activityat both vegetative and reproductive stages compared to check variety N-22. From this study, it can be inferred that high temperature stress is associated with increased activity of antioxidant enzymes in leaves may lead to withstand of heat tolerant rice genotypesfor stressthat in turn results in relative high yield.
Key words: Peroxidase (POD), Superoxide dismutase (SOD), Catalase (CAT)
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Ramesh, R., Ramesh, T., Rao, P.R., Shankar, V.G. and Bhave, M.H.V., High Temperature Stress Effected the Biochemical Parameters of Rice (Oryza sativa L.) Varietiesand HybridsInt. J. Pure App. Biosci.5(4): 1478-1490 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5704
