Report on the meeting of the Scientific Commission, I.H.G.C., George, South Africa
 20 – 25 February 2005 - (01/04)

31 scientists and representatives of the hop and brewing industry from 10 different countries all around the globe joined the meeting of the Scientific Commission in George, South Africa, from 20 - 25 February 2005.

In 12 papers and 10 posters the hop scientists presented their work covering the following topics:

· Hop breeding
· DNA-based methods in hop research
· Hop chemistry
· Hop diseases and pests

Session I: Hop Breeding (1) Chair: G. Brits

The assessment of resistance to diseases in the UK breeding programme
P. Darby
Stability of the productivity of world hop varieties as an important feature for the selection of parental components
V. Nesvadba and K. Krofta
Breeding and development of hop varieties at the Hop Research Center Huell
E. Seigner, A. Lutz, H. Radić-Miehle and S. Seefelder
Transfer of a resistance gene into hops
H. Radić-Miehle and E. Seigner

Hop Breeding (2) Chair: A. Čerenak

Utilisation of chemotaxonomy of male hops for breeding
K. Krofta and V. Nesvadba
Genetic sources of hops in the Czech Republic
V. Nesvadba and K. Krofta
Cultivation of Czech hop varieties on a farm of Hop Research Institute, Co., Ltd. in Žatec, Czech Republic
J. Kořen
Identification of gibberellins and involvement in hop flowering
N. Fernández Villacorta, M. Á. Revilla and H. Fernández

II. Session: DNA-Based Techniques in Hop Research (1) Chair: E. Seigner

Mapping of a powdery mildew resistance gene in hop (Humulus lupulus L.)
S. Seefelder, A. Lutz and E. Seigner
Hop (Humulus lupulus L.) genetic map and QTL analysis
A. Čerenak, Z. Šatović, and B. Javornik
Molecular diversity of hops (Humulus lupulus L.)
B. Javornik, J. Jakše, Z. Šatović, N. Štajner, and A. Čerenak

II. Session: DNA-Based Techniques in Hop Research (2) Chair: B. Javornik

New molecular markers for hop (Humulus lupulus L.)
J. Patzak, L. Vrba, and J. Matousek
Characterization of Verticillium albo-atrum hop isolates by molecular markers
S. Radišek, J. Jakše, and B. Javornik
Callus-derived hop plants show correlation between epigenetic instability and time in culture
E.L. Peredo, M.A. Revilla, J.M. Martínez-Zapater and R. Arroyo-García

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