Effect of Indole Acetic Acid Producing Bacteria and Hormone Applications on Essential Oil Components of <i>Satureja hortensis</i> L

Abstract

The impacts of plant growth-promoting bacteria on aromatic plant species are poorly known. This study was conducted in order to evaluate possible impacts of mineral fertilizer, plant growth regulators [PGR, Indole 3-acetic acid + benzylaminopurine IAA+BAP and BAP] and five N 2-fixing, P-solubilizing, IAA-producing bacterial strains, as biofertilizer on growth, yield and quality characteristics of the plant, essential oil content and major component of the essential of summer savory. GC-MS was used to analyze the hydro-distilled essential oils. Multi-traits bacterial inoculation and PGR applications stimulated overall plant growth, including drug and fresh herb yield, essential oil ratio and yield, crucial oil components such as carvacrol of savory. The presence of at least thirty one compounds were identified in analysed samples, representing 98.7-100% of the total oil contents. In terms of general categories, the chemical profile of the oils with carvacrol, p-cymene, γterpinene and α-terpinene as the basic components was dominated by monoterpene hydrocarbons.