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Journal of Applied Sciences
Year: 2005  |  Volume: 5  |  Issue: 4  |  Page No.: 655 - 658

Amino Acids in Grains of Barley Plants as Affected by Benzyl Adenine and Salinity from Diluted Sea Water

M.M. Hussein, M.S. Gaballah and S.Y. El-Faham    

Abstract: Grains of barley (Hordeum vulgare L.) Cv. Giza 124 were treated by benzyl adenine and grown under different salinity levels (2000, 4000 and 6000 ppm of diluted seawater) where the concentration of different amino acids were determined. Phenyl alanine, serine, valine and glutamic acids increased in grains of plants subjected to 2000 ppm salts and tended to decrease with the higher salt levels. Proline, isoleucine and tyrosine concentrations increased by increasing salt concentration in the irrigation water up to 4000 ppm and then lowered in grains of plants treated with 6000 ppm salt solution. Threonine, serine, isoleucine, leucine, tyrosine and glutamic acids increased, however, proline and phenyl alanine concentration were progressively increased by spraying benzyl adenine at the rate of 50 ppm. On the other hand arginine, lysine, histidine and aspartic acids showed a significant decrease. Benzyl adenine application led to decrease in the concentration of all amino acids in grains irrigated by saline water 2000 ppm salts and significant increase at 6000 ppm compared to the control (tap water).

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