Germinación y crecimiento de (Cedrelinga cateniformis) con diferentes tipos de sustrato, preparación de semillas y niveles de sombras en La Joya de los Sachas.

Abstract

The present experimental work consisted of the germination and growth of Cedrelinga cateniformis with different types of substrates, seed preparation and shade levels; at Joya of the Sachas. The methodology consisted of a block design with four study factors at three different levels, being these: Factor A, seeds with pod, without pod and scarified; Factor B, substrates consisting of soil (100%), soil (80%) + river sand (20%) and soil (80%) + rice husk (20%); Factor C, seeds without disinfection, with chemical disinfection and with hot water organic disinfection; Factor D, shade levels of 30%, 50% and 70%, with which nine treatments were developed applying three replications; We proceeded to determine the germination percentage, the statistical differences between the heights, diameters at neck height and number of true leaves of each seedling, as well as the length of the roots and the fresh and dry biomass of three plant roots; for this we used the regular analysis according to Taguchi in which response tables are constructed, the optimum combination factors and levels is identified, a graph of responses is made and a prediction and optimum treatment responses is made. Higher results were obtained for: germination percentage of 80.56% with a combination (A2B3C2D3), height of 134 mm (A2B3C3D3), diameter at neck height and higher biomass weight of 3.77 mm and 804.00 mg, respectively, for the combination (A1B1C1D1) and (A2B2C3D3). It was concluded that for the variable "germination" it is necessary conducting studies using the Taguchi 80.56% prediction (A2B3C2D3); it is not recommended conducting tests with scarified seeds because they are delicate to treat and tend being susceptible.