GROWTH AND OIL YIELD PARAMETERS OF THE Capsicum annuum VAR aviculare ASSOCIATED TO THE BENEFICIAL BACTERIUM Bacillus amyloliquefaciens AND Azospirillum halopraeferens UNDER FIELD CONDITIONS

Abstract

Capsicum annuum var. aviculare is one of the most extremely hot chilies, measuring between 50,000 and 100,000 Scoville Units. In the present work we studied the growth and development of chiltepin (Mazocahui), under field conditions, inoculated with previously selected and cultivated native strains of Bacillus amyloliquefaciens and Azospirillum halopraeferens. The seed was inoculated by the vacuum technique, and later at 34, 120, 180 and 210 days after germination. A drip irrigation system with a salinity (TDS) = 0.8 ppt was used. The results show that germination is significantly favored by the promoter effect caused by the beneficial bacteria. These inoculants increased some parameters of growth and development. We found significant differences regarding the control for the total weight and length of root and stem of the plants, as well as the total content of proteins, and in some parts of the plant analyzed as stem and leaf. Both bacteria increased fruit yield in the Mazocahui genotype. Our findings suggest that the application of strains of Bacillus amyloliquefaciens and Azospirillum halopraeferens, influence the increase in yield of Capsicum annuum var. aviculare, under field conditions. In addition, the data show the usefulness of the inoculation of chiltepin seed for agricultural producers in semi-arid areas where salinity is a problem.

Aplicación de extractos de algas, NP’SZnO y microorganismos sobre la biomasa vegetal en tomate

“…El efecto positivo del EA, NP'SZnO y microorganismos, por separado o en interacción, sobre el peso fresco, peso seco y biomasa de las plantas de tomate se observó en este trabajo. En diferentes trabajos se ha reportado el efecto bioestimulante de los microorganismos en plantas tal es el caso de los resultados reportados por Hernández et al (2018), quienes señalaron que la aplicación de Azospirillum halopraeferens promovió la ganancia en el peso fresco de la planta de chile (Capsicum annum), obteniendo 58.66% más peso fresco que el control. Así mismo, Ahmed (2021) indicaron que con la aplicación de A. brasilense en plantas de pimiento morrón se logró un incremento del 130.2% el peso fresco de la planta en comparación al testigo no inoculado.…”

PLANT GROWTH PROMOTING BACTERIA AND MYCORRHIZAL ON VARIETIES OF Sorghum spp. GERMINATION UNDER STRESSING ABIOTIC CONDITIONS

“…Most of the ATP required for early stages of development comes from mitochondria; therefore, generation of ROS during this process is mainly associated to cellular respiration. At later stages of development, photophosphorylation in chloroplast becomes the main source of ATP to cover the energy requirement for proper development; then, chloroplast also becomes a primary source of ROS (Asada 2006), and it is possible that the release of hormones by beneficial microorganisms inside and attached to plants, the production of volatile organic compounds, help to improve nutrient intake and improve tolerance to abiotic stress (García et al 2018).…”

The Azospirillum genus and the cultivation of vegetables. A review

“…In contrast, the inoculation of Capsicum annuum var. aviculare with A. halopraeferens provided increases in vegetative development of the plants and their composition related to the protein content in these organs during the flowering period, but with no effect on the yield or bromatological traits of the seeds (Hernández et al, 2018).…”