November 30, 2012

Carbon dioxide could reduce crop yields

High-yielding dwarf plant varieties lose their advantage due to increasing carbon dioxide concentration

The carbon dioxide content of the atmosphere continues to climb and heat up the climate. The gas is, however, indispensable for plants, as they use the carbon it provides to form glucose and other important substances. Therefore, the more carbon dioxide the better? The equation is unfortunately not as simple as that. The plants, which ensure our basic food supply today, have not been bred for vertical growth but for short stalks and high grain yields. Scientists from the Max Planck Institute of Molecular Plant Physiology and the University of Potsdam have now discovered that an increase in carbon dioxide levels could cancel out the beneficial effects of dwarf varieties.