Author(s): Sharefa Salama Abu. Muriefah and Nada Ibrahim Al Jwaizea
Article publication date: 2004-03-01
Vol. 22 No. 1 (yearly), pp. 34-39.
166
Keywords
Sulfur dioxide, wheat, barley, chlorophyll, carotene, carbohydrate, protein
Abstract
The effect of fumigation with sulfur dioxide on wheat Triticum aestivum and barley Hordium vulgare was investigated. In this study the effect of sulfur dioxide concentrations (3.0, 3.5, 4.0, 4.5, 5.0 ppm) for 2h on some physiological processes followed for the two species chlorophyll, carotene, carbohydrate and protein contents. SO2 reduction chlorophyll a, chlorophyll b, total chlorophyll and carotene contents in both species at all concentrations. Total carbohydrate decreased by exposure to SO2 in barley seedlings at concentrations (3.0, 3.5, 4.0, 4.5, 5 ppm) compared to control seedlings but only decreased at the highest concentrations (4.0, 4.5, 5.0 ppm) in wheat seedlings. Also protein content decreased by exposure to SO2 in wheat seedlings at low concentrations (3.0, 3.5 ppm) but increased at (4.0, 4.5, 5.0 ppm) concentrations. In barley seedlings protein content decreased by exposure to SO2 at all concentration compared to control seedlings.