CO2-Enhanced Yield and Foliar Deformation among Tomato Genotypes in Elevated CO2 Environments

摘要: Yield increases observed among eight genotypes of tomato (Lycopersicon esculentum Mill.) grown at ambient CO2 (about 350) or 1000 microliters per liter were not due to carbon exchange rate increases. varied while did not. a change in partitioning from root fruit. Tomatoes with enrichment exhibited nonepinastic foliar deformation similar nutrient deficiency symptoms. Foliar genotypes, increased throughout the season, and became most severe elevated CO2. was positively related fruit yield. Foliage lower canopy sampled growing season analysed for starch, K, P, Ca, Mg, Fe, Mn concentrations. K concentrations only elements correlated severity. decreased increased. In another study, foliage half plants one genotype received applications 7 millimolar KH2PO4. Untreated showed significantly greater than treated foliage. Reduced concentration may cause CO2-enhanced deformation. occur following uptake resulting reduced mass