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Influence of s-Triazines on Some Enzymes of Carbohydrates and Nitrogen Metabolism in Leaves of Pea (Pisum sativum L.) and Sweet Corn (Zea mays L.)

^a Department of Food Science, Utah State University, Logan, Utah 84321

Foliar applications of 2 milligrams per liter of 2-chloro-4,6-bis (ethylamino)-s-triazine, 2-methylmercapto-4-ethylamino-6-isobutylamino-s-triazine, and 2-methoxy-4-isopropylamino-6-butylamino-s-triazine caused increases in the activities of starch phosphorylase, pyruvate kinase, cytochrome oxidase, and glutamate dehydrogenase 5, 10, and 15 days after treatment in the leaves of 3-week-old seedlings of pea (Pisum sativum L.) and sweet corn (Zea mays L.). The results indicate that sublethal concentrations of s-triazine compounds affect the physiological and biochemical events in plants which favor more utilization of carbohydrates for nitrate reduction and synthesis of amino acids and proteins.