REGENERATION AND GENETIC TRANSFORMATION OF SUGAR BEET

摘要

A method for transforming plant cells of the species Beta vulgaris, wherein a dispersion or a suspension of crumbly white calluses is contacted with Agrobacterium containing a vector carrying a gene intended for insertion into the plant cells, followed by the coculture of the plant cells and the bacteria to produce transformed crumbly calluses, which are then regenerated into transgenic plants. Transgenic plants are also described which belong to the species Beta vulgaris and are resistant to infection by the beet necrotic yellow vein virus (BNYVV), said plants being stably transformed by a nucleic acid fragment which codes for at least a part of the capsid protein of BNYVV or for a derivative thereof.