Use of substrates in cutting of astrapéia (Dombeya wallichii L).
Dombeya wallichii, known as astrapeia, is an exotic plant native to Madagascar with ornamental features and of great importance to beekeepers, since its inflorescence attracts many bees and their flowering gives in autumn and inverts, critical period of food for them. The present work had as objective to evaluate the use of substrates in the vegetative propagation of the astrapéia by cutting. From buds collected from the base of a matrix plant located in the center of Dois Vizinhos - PR, 10 cm cuttings were made, with no leaves and a bevel cut at the ends. The experimental design was DIC (Completely randomized design), with three treatments: commercial organic substratum, soil and the mixture between both substrates in the proportion (1:1) (V/V), and four replicates of ten stakes per pair. planting was carried out in 120 cm3 polypropylene tubes containing the different substrates. They were stored in trays kept in the shade house of the Forest Nursery of the Universidade Tecnológica Federal do Paraná - Campus Dois Vizinhos. At 74 days, the percentage of rooted cuttings was evaluated, with calluses, dead, alive, with shoots, number and average length of roots. Data were submitted to analysis of variance (P ≤ 0.05), using the SISVAR program 5.6. According to the results for vegetative propagation of astrapeia is effective, the commercial organic substrate and the organic substrate mixture and soil were characterized as the best substrates.