Paper ID: 132
THE ROLE OF SILICON ON CONTENT OF PROLINE, PROTEIN AND ABCISIC ACID ON SOYBEAN UNDER DROUGHT STRESS
Yonny Koentjoro,1,), Sukendah2), Edi Purwanto3), Djoko Purnomo 3)
1) Department of Agricultural Science, Graduated School, Sebelas Maret University Surakarta, 57126
2) Department of Agronomy University of Pembangunan Nasional Veteran East Java, 60297
3) Department of Agronomy Sebelas Maret University Surakarta, 57126
Silicon is the second most abundant in the soil and Silicon could be considered as an essential element in many crops to enhancing growth and alleviating biotic and abiotic stresses. Silicon present exclusively and absorbed by plants in the form of silicic acid. Drought stress that occurs in plants inhibit of several metabolic processes in plant tissue, so that the availability of sufficient water in the soil becomes very important in plant cultivation. Plants have different adaptability to drought conditions, one of the efforts to increase plant resistance in conditions of limited water availability can be done with physiological engineering through controlling levels of proline, protein and abscisic acid, by giving silicon as an element that is known to increase power plants against drought. The research evaluated the role of silicon on proline, protein and abscisic acid in soybean under drought stress conditions and the research was arranged in screen house. The results showed that silicon had closely related to decreased content of proline and abscisic acid, an increased in silicon concentration tended to decrease proline (R2 = 0.94) and abscisic acid (R2 = 0.95), and applying a higher silicon increased crude protein (R2 = 0.95 ).