Abstract
Potato (Solanum tuberosum L. cv. Kara) was grown in Open-Top Chambers (OTCs) in Northern Egypt at ambient (ca 350 ppm) or doubled CO 2 (ca 690 ppm) either in charcoal-filtered air (15 nl l −1 ) or in non-filtered ambient air (78 nll −1 O 3 ) to investigate the changes in physiology and yield under long-term elevated CO 2 and/or O 3 throughout 100 days. Ambient O 3 level reduced net photosynthetic rates, number and weight of tubers by 18%, 41% and 21%, respectively, whereas elevated CO 2 caused the opposite effect where it increased the same parameters by 44%, 37% and 20%, respectively. Significant O 3 x CO 2 interactions were detected. However, O 3 caused an increase in GR and POD by 18% and 35%, respectively, while CO 2 caused an increase in POD only by 46%, and there was no effect of O 3 and/or CO 2 on other enzymes. The results of this study are discussed in relation to predicted atmospheric changes.
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 callMore From: World Journal of Science, Technology and Sustainable Development
Disclaimer: 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.
