RESEARCH UPON THE LENGT OF HOPS NEOPLANTS FORMED IN CONDITIONS OF IN VITRO

摘要

Hop ( Humulus lupulus L.) is a clonally propagated, dioecious, perennial, climbing plant used?? commercially for their secondary metabolites. The resins containing?? ?±- and?? ?2-acids, and essential oils?? produced by the lupulin glands, present on the female flowers are used to add bitterness, aroma and flavour?? to beer. Recently, flavonoids, including chalcones and flavanones, of hops have been shown to exert a variety of biological activities, including oestrogenic and anticancerogenic characteristics. In this review, we provide a overview of the techniques and opportunities presented by the integration of plant biotechnology?? into hop improvement. The use of tissue culture techniques such as micropropagation, meristem culture, in?? vitro storage, adventitious shoot induction, callus culture and cell suspension culture in hops are briefly?? reviewed. The usefullness of genetic transformation technology to introduce novel traits into hop is also?? discussed.