Efeito de substratos no crescimento de mudas de GRAPTOPETALUM PARAGUAYENSE (N.E.BR)E. WALTER.

Abstract

Succulents are among the ornamental plants preferred by Brazilians, and Graptopetalum paraguayense (N.E. Br) E. Walter, popularly known as ghost plant, stands out as one of the favorites. With the objective of evaluating the growth of Graptopetalum paraguayense (N.E. Br) E. Walter to obtain plants with a high commercial level and that meets the preference of the population of the Tocantins region, using explant in the form of a seedling, six types of substrates were tested. The experiment was carried out on a suspended bench, at Viveiro Viva Flores, covered with transparent plastic and 50% shading screen located in the city of Gurupi- TO, between August 29 and November 13, 2021. The design of the experiment was a randomized block, using six types of substrates (Terra preta; Terra preta + washed sand; Terra preta + sand + bovine manure; Terra preta + carbonized rice husk + bovine manure; Nova Planta Substrate; Black gold substrate, for cacti and succulents). The variables measured were: height, number of leaves, stem diameter, root length, root volume, root, shoot and total dry mass; and the levels of chloroplast pigments and anthocyanins. The experiment allows to conclude that the cultivation of Graptopetalum paraguayense (NE Br) E. Walter., was positively influenced by the substrate Nova Planta, obtaining seedlings of ideal size and better amount of leaves for the formation of rosettes, while the commercial substrate (Ouro Negro) due to its texture was the substrate that least favored the development of seedlings. Keywords: Succulent. Organic compounds. Phantom plant.