Propagación por segmentos vegetativos de Guadua angustifolia con diferentes sustratos, dosis de ácido naftalenacético y niveles de sombra, en el cantón Joya de los Sachas.

Abstract

The present experimental work consisted in the vegetative propagation segments of Guadua angustifolia through of different substrates, doses of naphthaleneacetic acid and shade levels, in Joya of Sacha, Orellana. The research was based on a quantitative experiment with correlational scope associated between factors and levels, based on the "Taguchi Method", for the formation of treatments, where the factors were: vegetative segments (A), types of substrates (B), doses of naphthaleneacetic acid (C) and shade levels (D). The population used was 675 Guadua angustifolia cuttings, using 9 treatments with 3 replications. When the treatments were formed, the appropriate substrates were sheathed, applying the acid doses to the vegetative segments and planting them up to the first node at an inclination of 45 degrees. The variables studied were the percentage of bud set 60 days after the beginning of rehearsal; number of buds 15 days after sowing with 10-day intervals until the end of phase; length and diameter of the buds every 10 days for two months. For statistical analysis, a response table was created and analyzed using the Taguchi method to determine the best combination of factors and levels. The treatments of stem cuttings achieved a higher yield, highlighting treatment 8 with 66.67 % at 60 days, while treatment 6 achieved higher shoot emission with an average of four shoots and for higher growth the combination (A3B1C3D2) obtaining; length 248.05 mm and diameter 12.60 mm. In conclusion, the vegetative segments of stems (A3) obtained greater success in shoot emergence and growth in the treatments applied. It is recommended to study the new projected combination of Taguchi (A3B3C1D3) in subsequent rehearsals for higher percentage of yield.