Effect of Foliar Application of Glutamic Acid and Nano Zinc Oxide on The Active Compounds and Phenols of Goldenrods (Solidag SP)

Abstract

The experiment was conducted in the Department of Horticulture, College of Agriculture, Tikrit University for the agricultural season 2020. Two factors were studied: first; foliar application of glutamic acid at three levels (0.100,200) mg.L-1 and the second; nano zinc oxide at four levels (0,0,50,1,1050) mg.L-1 in Randomized Complete Block Design ( RCDB) with three replication. The interaction A2Z3 treatment (glutamic acid 200 mg. L-1 + nano zinc oxide 1.50 g.L-1) was achieved the highest values of a-Pinene, limonene, Linalool and Myrcene Terpinen which reached (31.4, 20.3, 22.4, 27.4 and 28.2 mg.L-1) respectively, compared to the control treatment. Whereas the interaction treatment A2Z2 (glutamic acid 200 mg.L-1 + nano zinc oxide 1 g.L-1) achieved the highest values of Camphene (35.6 mg. L-1). While the interaction of A2Z3 (glutamic acid 200 mg.L-1 + nano-zinc oxide 1.50 g.L-1) was recorded the highest concentration of Rutin and Caryophyllene, which reached (40.1 - 253.8 μg.ml-1 ) respectively, While the interaction treatment A1Z3 (glutamic acid 100 mg.L-1 + nano zinc oxide 1.50 g.L-1) was achieved the highest value of Qurcetine (192.9 μg.ml-1).