QUALIDADE DE MUDAS DE Pereskia aculeata Miller EM RESPOSTA AO TIPO DE SUBSTRATO E MATURAÇÃO FISIOLÓGICA DO RAMO

Abstract

Pereskia aculeata Miller is a native plant of Brazilian flora, which has aroused the attention of the pharmaceutical and food industry due to its high nutritional value. The leaves have no toxic principles and have about 25% high digestibility protein. When it comes to native species with little agronomic knowledge, it is necessary to identify the factors that affect germination and / or vegetative propagation. In this sense, the objective of this study was to analyze the influence of the position of the pile, and the type of substrate, on the growth and aerial development of Pereskia aculeata Miller for the production of seedlings. For the vegetative propagation, three types of cuttings were obtained, obtained from the basal, median and apical portions of the branch. And in each type of cutting the thinning of the leaves and lateral branches was made. The planting of the cuttings was done in four types of substrates, being: S1 = soil; S2 = soil + washed sand (1: 1); S3 = soil + washed sand + tanned bovine manure (2: 1: 1) and S4 = Bioplant® commercial substrate. After 60 days the installation of experiment the seedlings were evaluated as follows: Soil Plant Analysis Development Index (SPAD), chloroplastidic pigment content, number of leaves, shoots, root length and mass of fresh and dry matter of shoot and root. The physiological maturation of the branch and the type of substrate interfered in the quality of the ora-pro-nobe seedlings. The stem from the basal part of the branch, and the substrate soil + sand + manure provided better morphophysiological quality in seedlings of ora-pro-nóbis.