PJB-2009-243
EFFECT OF SHORT-TERM EXPOSURE OF TWO DIFFERENT CONCENTRATIONS OF SULPHUR DIOXIDE AND NITROGEN DIOXIDE MIXTURE ON SOME BIOCHEMICAL PARAMETER OF SOYBEAN (GLYCINE MAX (L.) MERR.)
NEELOFER HAMID AND FAIZA JAWAID
Abstract
The effect of elevated level of SO2+NO2 on some physiological and biochemical parameters of Glycine max were examined. Twelve days olds Soybean (Glycine max) seedling were exposed to two different (2% and 3%) levels of SO2+NO2 mixture. Fumigants were applied for 30 minutes per day, 3 days per week for 3 weeks duration. Aeration with enriched SO2+NO2 air resulted in higher phenolic content as compared to plants grown in control condition. However, reduction in leaf total carbohydrate, total protein and total chlorophyll were found in plants grown under elevated levels and the effect were more pronounced at 3% SO2+NO2 exposure as compared to 2% concentration.
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