Resumen

GUTIERREZ-CALVO, A.E.; ESTRADA, A. Gutiérrez; MICELI-MENDEZ, C.L.  y  LOPEZ-MICELI, M.A.. Effects of Bacillus subtilis strains GBO3 AND IN937b on the growth of corn (Zea mays L.). Polibotánica [online]. 2022, n.53, pp.211-218.  Epub 04-Abr-2022. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.53.14.

The use of synthetic fertilizers for production of corn (Zea mays L.) generates health risks, interruption of natural ecological cycle of nutrients, environmental contamination and destruction of biological communities, therefore, the present research aimed to evaluate the effects of Bacillus subtilis strains GBO3 and IN937b on the growth of maize plants. During the experiment, three inoculations of the strains were carried out, one on the day of sowing, others more at 15 and 30 days later, both strains were tested at concentrations of 1x107 CFU●mL-1 and 1x108 CFU ●mL-1, evaluating five treatments, four experimental treatments and one control, each with 18 repetitions, using one seed per repetition, for a total of 90 experimental units, the treatments containing the GBO3 strains at 108 CFU ●mL-1 and IN937b at 107 CFU ●mL-1 of B. subtilis showed effects more marked in growing of Z. mays, with a total weight of 11.29 g in both treatments, and 6.58 g in the control treatment, likewise, all the experimental treatments significantly increased biomass and plant development, agree with Kruskal-Wallis test (p≤ 0.05) applied for non-homogeneous variances, the results of this research showed that the strains have the ability to stimulate positively the growth Z. mays.

Palabras llave : Rhizobacteria; Zea mays; Bacillus subtilis; Plant growth promoting bacteria.