Abstract
The role of antioxidative enzymes in response to heat stress tolerance (HST) of three tomato cultivars was investigated in this research. The leaves were obtained from tomato plants at the first bloom and yield stages and then were subjected to controlled high temperature treatments in water bath. The temperature in the water bath was increased 5 °C systematically for every half an hour from 35 to 60°C to generate a heat-stressed condition. The plants in yield stage exhibited an increase in HST when compared with the plants in first bloom stage and heat stress increased hydrogen peroxide (H2O2) level in leaves. Among the performed enzyme analysis, only catalase (CAT) involved in HST of tomato cultivars, however it may not be correlated with the degree of HST. In addition, two acidic and one basic isoperoxidases appeared in relatively heat tolerant cultivars in the yield stage, therefore isoperoxidases may be associated to HST in tomato plant.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
