Involvement of cytokinins in biomass accumulation of Limonium sinuatum under root restriction during nursery

Abstract It has been suggested that the response of specialty cut flower Limonium sinuatum to different abiotic stress situations related plug tray cell size during nursery could be associated with synthesis and translocation endogenous cytokinins produced in root tips. To validate this hypothesis, aim work was evaluate participation process biomass accumulation L. plants through foliar spraying a synthetic cytokinin (benzyl aminopurine, BAP) an inhibitor (dopamine). Our results indicated BAP increased leaf area initiation expansion, plant photosynthetic capacity, differential partitioning towards shoot apical meristem by positive feedback mechanism threshold optimal close 100 mg L-1 BAP. Dopamine appeared affect cytokinins, reducing previously mentioned responses. Responses were dose-dependent, optimum 200 dopamine. allow concluding level such as restriction is determining variable species.