Research Program at Boyce Thompson Institute Supported by DOE-EPA Funds (Energy-NCLAN)

摘要

Studies were conducted on the influence of NO sub 2 on the phytotoxicity of SO sub 2 in soybean (Glycine max) and to determine if the interactive effects of NO sub 2 and SO sub 2 affected the yield of soybean under field conditions. Foliar injury symptoms occurred only on plants exposed to SO sub 2 . NO sub 2 alone or in combination with SO sub 2 had no effect on injury, suggesting that NO sub 2 is less phytotoxic than SO sub 2 and that the presence of NO sub 2 alters the susceptibility of the plant to SO sub 2 -induced foliar injury. Yield data for the higher SO sub 2 concentration with and without NO sub 2 showed that the combined effect of the two pollutants in reducing yield was greater than that of SO sub 2 alone. Preliminary results are reported of studies on the effects of SO sub 2 on specific plant diseases and the interaction of SO sub 2 and insects.