Preliminary research on getting callus in Ginkgo biloba L.

The purpose of such preliminary research has been represented by the establishment of the influence of treatments by growth regulators on Ginkgo biloba L. explants (taken from plants in their second year of vegetation), so as to get callus. Therefore, one has tested the influence of three such growth regulator treatments (6-benzylaminopurine, 6-benzylaminopurine and alpha-naphthaleneacetic acid, or simply alpha-naphthaleneacetic acid), on nine types of cauline explants for the following purposes: pre-initiation of callogenesis, inducing and generating the callus, callus development and maintaining such callus development. The best influence in order to get callus in Ginkgo biloba L., has been achieved in the case of the experimental variant consisting of the mixture between the treatment by alpha-naphthaleneacetic acid and the explants of the type taken from position 4 from rosette (MBAV5).