Entomopathogenic bacteria Bacillus thuringiensis and their potential in biocontrol of insects

  • M. Boiko
Keywords: B. thuringiensis var. thuringiensis, spore-crystal complex, entomotoxic action, antifidant effect

Abstract

The influence of breeding grounds to productivity of strains B thuringiensis № 87/3 of the first seroprevalence was investigated. Determining  the autonomic stage of growth patterns of aksenic culture strain B. thuringiensis 87 and 800 at the fermentation.The data on multifunctional properties of natural bacterial strains B. thuringiensis var. thuringiensis with entomotoxic and antifidant effects on larvae of Leptinotarsa decemlineata Say. are presented. It is shown that aksenic culture strain B. thuringiensis № 87/3 after in vitro selection has high potential of efficiency (titer metabolic spore-crystal complex is from 3.0 to 4.7 billion/ml culture fluid) and insecticidal action (96.0 -99.0%).The efficiency of the use of natural bacterial strains B. thuringiensis in the system of microbiological control of insect is proved.Search, selection and integrated research of prospective strains-producers as the basic constituent of biopreparations are today the most urgent areas of research.

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Published
2017-11-12
Section
Agricultural sciences (agronomics, agricultural ecology, land reclamation, ecology, crops husbandry, farming)