Potato Starch (Starch) (Sigma Aldrich, S2004), Sucrose (Sigma Aldrich, S5391), Humic Acid (HA) (Sigma Aldrich, 53680), Citric Acid (CA) (C2404), Ethylenediaminetetraacetic Acid Iron (III) (EDTA-Fe) (Sigma Aldrich, E6760), Adenine (Sigma Aldrich, A5665), 6-Benzylaminopurine (6-BAP) (Sigma Aldrich, B3274), and Seaweed Extract (SWE) (Horti Flora). All compounds above, except HA and Adenine, were readily soluble and diluted to 2 concentration levels using deionized water (Merck Millipore). Moreover, 6-BAP came as solution (1 mg mL-1), and was diluted to desired concentration levels (mg mL-1). HA and Adenine were dissolved using NaOH (2 M) and HCl (2 M), respectively, and they were subsequently neutralized (pH 7). The unit for the concentration of SWE is expressed in % volume/volume (% v/v).