The disease caused by the phytopathogen Alternaria spp. is one of the main causes of damage to broccoli crops in Ecuador, causing up to 30% in losses. This work was carried out in order to determine the antagonistic capacity of autochthonous strains of Bacillus subtilis against Alternaria spp. by means of in vitro tests. The study used strains of B. subtilis isolated from the main broccoli producing areas in Ecuador. Both pathogenic and antagonist strains were isolated and identified from field samples taken randomly from broccoli crops in the provinces of Cotopaxi, Imbabura and Tungurahua. Antagonistic capacity was measured using the Bell scale. The results obtained indicate that the ATCC 6633 strain and the AB-4 strain identified and biochemically characterized as Bacillus subtilis subsp. licheniformis, presented an antagonistic activity with an average value of 45.21 cm class 2 according to the Bell scale, thus determining the potential of Bacillus subtilis as biological controller against Alternaria spp.
|Translated title of the contribution||Autochthonous Strains Of Bacillus Subtilis As In Vitro Biocontrol Agent Of Alternaria Spp. In Brassica Oleracea Var. Italica|
|Original language||Spanish (Ecuador)|
|State||Published - 29 May 2018|