Cytogenetic Studies on Barley Plants Regenerated from Immature Embryo Culture and Their Progenies Meiotic Analysis of the Regenerated Plants Derived from a Young Spike of Octoploid Triticale ×Secale cereale F1 Hybrid Research on the Factors Influencing Regeneration of Plantlets From Resistant Calli of Transgenic Maize Transformation of Agrobacteria tumefaciens on healthy and infectious Paulownia Obtainment of regeneration plantlet of Catharanthus roseus hairy roots and production of anticancer alkaloids Variability of Anther Culture and the Technology Strategies for Developing Pract ical Photoperiod Sensitive Male Sterile Rice Obtainment of regeneration plantlet of Catharanthus roseus hairy roots and production of anticancer alkaloids