Abstract
The aim of this research was to study the morphogenetic ability of Taraxacum kok-saghyz root tissues and to optimize the culture medium for the subsequent genetic transformation of plants. The effects of exogenous hormone exposure on survival, in vitro shoot induction, and root formation were studied by using root tissues. For the cultivation the samples of kok-saghyz, the Murashige-Skuga nutrient medium was used as the basis, supplemented with sucrose 20 g/l, vitamins B5 1 mg/l, and also containing agar 5.5 g/l. The pH value is 5.7. For the plant regeneration induction, growth regulators, auxins and cytokinins were added in culture media. In this study, the roots of D 1 mm and two media variants were used for comparison: variant 1. MS + 6-BAP 1 mg/l; variant 2. MS + 6-BAP 1 mg/l + IAA 0.2 mg/l. An effective protocol for the regeneration of kok-saghyz explants was developed. There was a high percentage of regeneration of 87.6% on the medium containing a combination of cytokinin and auxin, as well as a high percentage of direct shoot formation, which was 65.1%, the degree of rooting was 100%, the resulting cultured plant tissues grew well and had a high survival rate after transplantation.
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