Author: Omer Ibrahim, Valeria Ivanova, Petya Gercheva
propagation
47. An investigation on using of growth regulators in propagation of Taxus baccata by cuttings
Author: Valeria Ivanova, Omer Ibrahim
14. Enhancement of seed germination and seedling growth in Magnolia grandiflora L. using pre-sowing treatment with growth regulators (IAA and GA3)
Author: Omer Ibrahim, Valeria Ivanova, Petya Gercheva, Lilyana Nacheva
15. Opportunities for grafting Ginkgo biloba L. by the hot callus method
Author: Lilyana Nacheva, Stefan Gandev, Petya Gercheva, Valeria Ivanova