Evaluación de tres tratamientos pre-germinativos y tres tipos de sustratos para la propagación de arrayán (Myrcianthes hallii) (O. Berg) Mcvaugh.

Abstract

The evaluation of three pre-germination treatments (Pa: cold water for 24 hours, Pb: alcohol 5% for 24 hours and Pc: chlorine 20% for 24 hours) and three substrates (S1= 100% river sand, S2= soil 5% for 24 hours and Pc: chlorine 20% for 24 hours) and three substrates (S1= River sand 100%, S2= Black soil 50% + clay 25% + Compost 25% and S3= Black soil 70%+ Compost 30%), for 50% black soil + 25% clay + 25% compost and S3= 70% black soil + 30% compost), for the sexual reproduction of Myrcianthes hallii (Arrayán) in Montalvo parish, Ambato canton, province of Tungurahua. A randomized complete block design was used with a factorial structure with two factors, 9 treatments and 5 treatments. with two factors, 9 treatments and 5 replications. Germination percentage data were gathered at 15 and 30 days after germination and 30 days after sowing and plant development, as well as height, diameter at the collar height, number of leaves, number of leaves at 30, 45 and 60 days after sowing. For the analysis of variance, Tukey's test with a significance level of 5%. The percentage of emergence taken at 15 and 30 days did not differ between treatments. Respect to plant development, it was found that the best substrate evaluated at 60 days was the T6 (black soil 70% plus Compost 30% plus pre-germination treatment in alcohol). pre-germinative treatment in 5% alcohol for 24 hours), resulting in a diameter at the neck height (DAC) (1.11 mm), height (2.79 cm), number of leaves (4,93 leaves). It is concluded that for the variable germination at 15 and 30 days did not show any significance, the T6 treatment showed the best results; diameter at collar height, height and number of leaves. It is recommended to seedling producers who wish to propagate Arrayán, it is recommended to use a substrate composed of 70% black soil and 30% compost and also use the pre-germination treatment in 5% alcohol for 24 hours, obtaining good results in germination. hours, obtaining good results in germination and growth.