Impact of warming climate on barley and tomato growth and photosynthetic pigments

Juknys, Romualdas; JanuškaitienĜė, Irena; Dikšaitytė, Austra; Šliumpaitė, Irma
June 2012
Biologija;2012, Vol. 58 Issue 2, p87
Academic Journal
One of the major issues of global concern today is rapidly increasing levels of CO2 in the atmosphere and its potential to change the world climate. It is important to understand how different agricultural cultivars will respond to different projected future levels of elevated CO2 and its association with increasing temperatures. In this experiment, there were examined single and combined effects of different CO2 levels (ambient 350 ppm, 700, 1 500 and 3 000 ppm) and elevated temperature (ambient +4 °C-day/5 °C-night) on barley (Hordeum vulgare L. cv. 'Aura') and tomato (Lycopersicon esculentum Mill. cv. 'Svara') growth characteristics. Experiments were conducted in the closed environment-controlled chambers. The results showed that the current ambient level of atmospheric CO2 concentration was a growth limiting factor for the investigated agricultural species. Under single CO2 effect the greatest biomass accumulation of both plants was observed at 1 500 ppm concentration. However the highest investigated concentration of CO2 (3 000 ppm) significantly stimulated only biomass of barley. The highest biomass accumulation was detected under combined effect of elevated CO2 and temperature, when the increases were 43.0 and 37.6% (p < 0.05) for barley and tomato respectively, compared to reference treatment. The factorial Anova analysis of all measured indices of investigated plants showed that the prior climate factor for barley was elevated CO2 (700 ppm) while the effect of increased temperature (ambient +4 °C-day/5 °C-night) was much weaker. Whereas for tomato, which is considered as warmth-loving plant, substantial climate factor was elevated temperature, and the effect of 700 ppm CO2 had a markedly weaker input.


Related Articles

  • Leaf structural characteristics are less important than leaf chemical properties in determining the response of leaf mass per area and photosynthesis of Eucalyptus saligna to industrial-age changes in [CO2] and temperature. Xu, Cheng-Yuan; Salih, Anya; Ghannoum, Oula; Tissue, David T. // Journal of Experimental Botany;Nov2012, Vol. 63 Issue 16, p5829 

    The rise in atmospheric [CO2] is associated with increasing air temperature. However, studies on plant responses to interactive effects of [CO2] and temperature are limited, particularly for leaf structural attributes. In this study, Eucalyptus saligna plants were grown in sun-lit glasshouses...

  • Asymmetric effects of daytime and night-time warming on Northern Hemisphere vegetation. Peng, Shushi; Piao, Shilong; Ciais, Philippe; Myneni, Ranga B.; Chen, Anping; Chevallier, Frédéric; Dolman, Albertus J.; Janssens, Ivan A.; Peñuelas, Josep; Zhang, Gengxin; Vicca, Sara; Wan, Shiqiang; Wang, Shiping; Zeng, Hui // Nature;9/5/2013, Vol. 501 Issue 7465, p88 

    Temperature data over the past five decades show faster warming of the global land surface during the night than during the day. This asymmetric warming is expected to affect carbon assimilation and consumption in plants, because photosynthesis in most plants occurs during daytime and is more...

  • IS THE ENHANCEMENT OF GLOBAL WARMING IMPORTANT? Symons, Martyn C.R.; Barrett, Jack // Energy & Environment;2001, Vol. 12 Issue 4, p1 

    Examines the causes and possible solutions to global warming. Impact of human activities on the increasing atmospheric carbon dioxide concentration; Use of alternative methods to tap energy; Reduction in the emission of carbon dioxide.

  • Environmental controls on the CO2 exchange in north European mires. Lindroth, Anders; Lund, Magnus; Nilsson, Mats; Aurela, Mika; Christensen, Torben Röjle; Laurila, Tuomas; Rinne, Janne; Riutta, Terhi; Sagerfors, Jörgen; Ström, Lena; Tuovinen, Juha-Pekka; Vesala, Timo // Tellus: Series B;Nov2007, Vol. 59 Issue 5, p812 

    Net CO2 exchange measured under well-mixed atmospheric conditions in four different mires in Sweden and Finland were used to analyse which factors were controlling photosynthesis and respiration. The parameters of a light response function showed strong seasonal variations with similar behaviour...

  • Temperature Modulates Coccolithophorid Sensitivity of Growth, Photosynthesis and Calcification to Increasing Seawater pCO2. Sett, Scarlett; Bach, Lennart T.; Schulz, Kai G.; Koch-Klavsen, Signe; Lebrato, Mario; Riebesell, Ulf // PLoS ONE;Feb2014, Vol. 9 Issue 2, p1 

    Increasing atmospheric CO2 concentrations are expected to impact pelagic ecosystem functioning in the near future by driving ocean warming and acidification. While numerous studies have investigated impacts of rising temperature and seawater acidification on planktonic organisms separately,...

  • Percent Photosynthesis (Net CO2 Exchange Rate) Increases for 300, 600 and 900 ppm Increases in the Air's CO2 Concentration:.  // CO2 Science;12/11/2014, p1 

    Two charts are presented which explain the percentage of increased photosynthesis for 300, 600 and 900 part per million in the air's carbon dioxide concentration.

  • Global warming brings early spring. Pearce, Fred // New Scientist;7/13/96, Vol. 151 Issue 2038, p7 

    Reports on the earlier onset of the northern spring than it did in the past due to global warming. Sudden shift in the seasonal cycle of the concentration of atmospheric carbon dioxide; Importance of terrestrial vegetation to the carbon cycle; Increase in the strength of the seasonal carbon...

  • Carbon dioxide will likely help humanity.  // Alberta Report / Newsmagazine;06/08/98, Vol. 25 Issue 25, p20 

    Discusses environmental concerns in Alberta, Canada. What global warming could mean for the province; Concerns of farmers; Environmentalist views of premier Peter Lougheed; Consequences of increased atmospheric levels of carbon dioxide (CO2) that would allow plants to grow under more favorable...

  • The Hazards of Coal Dependence. Broecker, Wallace S. // Natural History;Oct77, Vol. 86 Issue 8, p8 

    Discusses the environmental consequences of human dependence in coal as the main source of energy. Atmospheric carbon dioxide production of coal combustion; Effects of global warming on the ecosystem; Melting of ice sheets; Natural climate change in earth; Strategies to avoid environmental hazards.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics