Abstract
With the aim of increasing the production of Croton lechleri Mull.Arg plants due to its attributes as a medicinal plant, the effect of different types of stakes and substrates as root promoters under intermittent nebulization conditions was evaluated. The work was conducted through a randomized complete block scheme adapting a factorial of 4 × 3, being the factors types of stakes (apical with leaves, apical without leaves, medium and basal) and substrates (sand, sand + Aserrin (1:1) and Aserrin (100%) at the rate of 10 stakes per repetition totaling 360 stakes throughout the experiment. The percentage of root (%), dead stakes (%), sprouted stakes (%), dead stake diameter was evaluated. (mm), shoot length (cm) and root length (cm) The Aserrin provided the highest number of dead stakes and the smallest number of shoots in the species, with apical stakes with leaves and the combination of sand + Aserrin as a substrate providing the highest percentage of roots formed, therefore these two factors influence the production of plants in the dragon blood species.
Highlights
In the Amazon region, there are a large number of medicinal species, many of which are used in medicine, produce leaves, fruits, stems and quality sap to treat the greatest number of human diseases (Froldi et al, 2009)
The experiment was conducted under an experimental delineation of randomized complete blocks in a factorial scheme (4 × 3), with the factors being types of cuttings (apical with leaves (E1), apical without leaves (E2), median (E3) and basal (E4) and three types of substrates (sand (S1), sand + Aserrin (S2) and Aserrin (S3) Each experimental plot was composed of 10 stakes with four repetitions, after which the stakes were placed and conducted in greenhouse with a cover plastic and an intermittent nebulization system, the irrigation was programmed for 4 times a day lasting 6 minutes this with the purpose of avoiding stress generated by the environmental conditions of the region
The substrates used in the experiment were prepared with the purpose of improving the conditions for the production of roots, the sand was obtained from the river bank branco, cast to facilitate the filling of the banks, the Aserrin obtained from the mountainous area industrial of the city of Boa Vista, this was cast using a 5 mm mesh, mineralized for a period of 3 months, the combination sand + Aserrin (1:1) has the purpose of intermediate effects of both substrates
Summary
In the Amazon region, there are a large number of medicinal species, many of which are used in medicine, produce leaves, fruits, stems and quality sap to treat the greatest number of human diseases (Froldi et al, 2009). Arg), popularly known as blood grade, blood of water, Sangue de Dragão, belongs to the family of Euphorbiaceae, measures approximately between 35-45 m in height, its leaves are simple, with two small glands to join the petiole with the limb, its fruits are globose green yellow with size of 3 mm in length and 4 mm in width, it is a monoecious tree the hermaphrodite flowers of yellow color, its seeds in the form of ovoid with 3 mm in length and 2 mm wide (Palomino & Barra, 2003; Gumarães & Secco, 2010). The species is a pioneer of rapid growth, tolerates floods and waterlogging, shows medicinal importance due to its sap used to heal wounds, treatment for gastric diseases and infections (Rossi et al, 2013; Savietto et al, 2013). Presenting in its chemical composition the Taspina alkaloid with antibacterial, anti-hemorrhagic, antiviral and antioxidant properties treating gastric problems of the stomach and intestine (Scalon et al, 2008)
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