Evaluación de bacterias endófitas promotoras de crecimiento en el cultivo de quinua

Abstract

The present research aims to evaluate the interaction of simple and combined endophytic bacteria, to develop new bioinocu- lants formulations, over the agronomic variables of the quinoa cultivation, to generate viable alternatives for the Andean farmers. A powder product was obtained by mixing a bioinoculants formulation developed with three single and combined strains of Bacillus sp. and an inert substrate, to be compared in a greenhouse/in vitro environment with a commercial prod- uct (TRICOBAL) as a positive control group and normal soil (without inoculants) as a negative control group. The follow- ing treatments were identified: Bacillus pumilus (Bp), interaction between Bacillus pumilus and Paenibacillus polymyxa (Bp + Bv54) and the combination of Bacillus pumilus, Bacillus subtilis and Paenibacillus polymyxa (Bp + Bs + Bv54) with prominent results on: plant height (104.14 cm), panicle height (34.32 cm), roots weight (5 grs.) and grain performance; demonstrating that these native strains significantly promote the growth of quinoa plants in relation to the commercial product (TRICOBAL). In addition, it was determined that in an in vitro environment the three used strains of Bacillus can coexist.