Brown seaweed extract enhances rooting and roots growth on Passiflora actinia Hook stem cuttings

Abstract

Passiflora actinia Hook (common name: ‘maracujá do mato’) is an important medicinal species due to significant sedative and anxiolytic activities. In order to commercially exploit the plant, however, studies on propagation to improve rooting in stem cuttings are needed. The present study was designed to evaluate the effect of the brown seaweed (Ascophyllum nodosum (L.) Le Jol.) extract when applied on P. actinia stem cuttings bases. Five concentrations of the extract in distilled water were evaluated: 0% (pure distilled water), 10%, 20%, 30% and 40%. The experimental design was completely randomized with 4 repetitions and 12 cuttings per experimental unit. Cuttings were evaluated 45 days from planting. Data were analyzed through polynomial regression analysis and Pearson’s correlation coefficients were calculated for all the variables. On average, 51.27% rooting was achieved. Rooting percentage increased linearly according to the brown seaweed extract concentrations. When compared to the control treatment, about 10% increase in rooting was observed at the treatment with 40% seaweed extract. Leaf retention response to A. nodosum increasing concentrations was also adjusted in a positive linear model. A 15.6% increase in leaf retention was observed at the 40% seaweed concentration when compared to the control. Positive correlations were observed for leaf retention and rooting percentage and leaf retention and roots length. The immersion of P. actinia stem cuttings bases in A. nodosum extract at a concentration of 40% promote positive effects on rooting and facilitate the species propagation.

Seaweed extract to enhance marigold seed germination and seedling establishment

“…Thus, the application of seed extract enhances marigold physiological performance, increasing seed germination and seedling development. However, the use of algae extract had no effect on root morphology of Passiflora actinia [27] and ornamental sunflower seedlings [4]. A. nodosum extract promotes root development and, consequently, serves to effectively establish the seedling [23].…”

Biological Contribution of Ornamental Plants for Improving Slope Stability along Urban and Suburban Areas

“…Seaweed extracts obtained from Ascophyllum nodosum (L.) Le Jolis applied to Passiflora actinia Hook. increased 10% of rooting with 40% seaweed extract [120]. The rooting stimulation of a commercial biostimulant-based seaweed extracts has been also demonstrated in woody cuttings of Camellia japonica L. [121].…”

Organic Stimulant Uses In Natural Plant Production

“…(Ferrante et al, 2013) also observed that Actiwave® (Valagro Spa), a biostimulant, had a stimulating effect on the rooting of Camellia japonica cuttings. In a study conducted by (Nicola et al, 2006) on Mentha×Piperita, the use of natural rooting hormones for organic farming and environmental protection was recommended although the effects of natural rooting hormones and synthetic auxin group hormones on rooting of cuttings were found to be at the same level (Gomes et al, 2018) investigated the effect of brown seaweed on the rooting of Passiflora cuttings. 40% concentration of the organic-based preparation of brown seaweed increased the rooting rate by 10%.…”