Improving Aerial and Root Quality Traits of Two Landscaping Shrubs Stem Cuttings by Applying a Commercial Brown Seaweed Extract

The availability of quality planting material is one the most important requirements for increasing productivity any ornamental crop. Horticulturists make use auxins and apply them exogenously to cuttings generate adventitious roots balanced shoots. Many studies have illustrated influence seaweed extracts on growth crops; their in vegetative cutting propagation, our knowledge, has been little investigated. Moreover, there a lack information IBA extract concentration carbohydrate content. This research aimed compare effects commercial extract, called Goteo®, with that phytohormone IBA, aerial root traits stem two Mediterranean landscaping shrubs: Lantana camara (S1) Abelia × grandiflora (S2). treatments applied semi-hardwood were as follows: C0: untreated control; concentration: 1250 mg L−1; Goteo® concentrations at 1, 2, 3 mL L−1. In L. camara, greatest values rooting percentage obtained under when compared A. grandiflora, no among treatments. presented study shows stimulated provided better shoot development Abelia. S1, treated dose L−1, greater number roots, traits, morphology content, than those IBA. S2, 1 L−1 could be recommended obtain high-quality rooted cuttings.