a) Authority holding the list of names of the persons responsible for maintenance breeding:
b) List of names of the person or persons responsible for maintenance breeding:
| Number | Name | Address |
| 1 | Teagasc Research Centre | Oakpark Carlow Ireland |
| 4 | Department of agriculture, food and rural development | Backweston farm Leixlip, Co Kildare Ireland |
| 13 | Seed Technology Ltd | Ballymountain Waterford Ireland |
| 17 | Departement Plantengenetica | Caritasstraat, 21 B-9090 Melle |
| 20 | Landbrugets Kartoffelfond | DK-7184 Vandel |
| 21 | Benoist. C. | Ferme de Moyencourt, F-78910 Orgerus |
| 25 | BayWa AG Habt Saatgutt-Kartoffeln | Postfach 810108 D-81901 Munchen |
| 26 | Josef Breun | Amselweg, 1 D-8522 Herzogenaurach |
| 27 | DSV Lipstadt-Bremen GmbH | Weissenburgerstrasse 5 D-59557 Lippstadt |
| 29 | KWS Kleinwanzlebener Satzucht AG | Grimsehlstrasse 31, Postfach 1463 D-37555 Einbeck |
| 31 | F. Von Lochow Petkus | Postfach 1197 D-29296 Bergen |
| 32 | Kruse & Co Samengrosshandel | Schlossstrasse 10-12 D-32139 Spenge |
| 35 | D.J. Van Der Have Grasses B.V. | P.O. Box 127, NL-5520 A.C. Vlijmen |
| 37 | Dr H. Strube Saatzucht Sollingen | Postfach 1353 D-38358 Schoningen |
| 43 | Danske Planteforaedling Boelshoej | Schlossstrasse 10-12 DK-4660 Store Heddinge |
| 49 | Saka-Ragis | Postfach 132216 D-2000 Hamburg 13 |
| 55 | Florimond Desprez | F-59242 Capelle-en-Pévèle |
| 58 | Institut national de la recherche agronomique | 149 rue de Grenelle F-75341 Paris Cedex 07 |
| 60 | Secobra Recherches | Centre de bois Henry F-78580 Maule |
| 62 | Serasem | 60 rue Leon Beauchamp, BP 45 F-59933 La Chapelle d'Armentière Cedex |
| 64 | Unsigma | Route de Clermont F-60480 Froissy |
| 66 | Verneuil Recherche | BP 3 F-77390 Verneuil |
| 72 | Barenbrug Holdings BV | Stationsstraat 40 6678 AC Oosterhout Nederland |
| 77 | Cebeco Zaden BV | PO Box 10000 5250 AA Vlijmen Nederland |
| 93 | Mommersteeg International BV | PO Box 1 5250 AA Vlijmen Nederland |
| 100 | Kweekbedrijg Ropta ZPC | Postbus 2 9123 ZR Metslawier Nederland |
| 102 | Van Engelen Zaden BV | Vijfhoevenlaan, 4, Postbus 35 5250 AA Vlijmen Nederland |
| 103 | SES | Industriepark, 15 B-3300 Tienen |
| 108 | Zelder BV | Postbus 26 6590 AA Gennep Nederland |
| 111 | Agrico Ltd | Castleton of Eassie, Forfar DD8 1SJ Angus, Scotland United Kingdom |
| 112 | Sharpes International Plant Breeding Station | LN5 0LF Boothby Graffoe, Lincolnshire United Kingdom |
| 113 | Perryfields Seeds Ltd | Thorn Farm, Evesham road WR7 4LJ Inkberrow, Worcestershire United Kingdom |
| 118 | New Farm Crops Ltd | Market Stainton LN8 5LJ Market Rasen, Lincolnshire United Kingdom |
| 119 | Nickerson Ltd | Rothwell LN7 6DT Market Rasen, Lincolnshire United Kingdom |
| 125 | SCRI | Invergowerie DD2 5DA Dundee United Kingdom |
| 126 | Semundo Ltd | 49 North Road CB1 6AS Great Abington, Cambridge United Kingdom |
| 128 | CV Zaden Labor | Industrieweg, 98-100 B-9032 Wondelgem |
| 130 | IGER | Gogerddan Aberystwyth, Wales United Kingdom |
| 131 | Van der Have BV | Postbus 127 5520 AC Vlijmen Nederland |
| 132 | PBI | Maris Lane CB2 2LQ Trumpington, Cambridge United Kingdom |
| 143 | Nordsaat Saatzuchtgesellschaft GmbH | D-2322 Waternevestorf |
| 153 | Agrosearch Grasslands | Palmerston North New Zealand |
| 157 | Hillshög AB | Box 302 S-261 23 Landskrona |
| 161 | Svalöf Weibull AB | S-268 81 Svalöv |
| 168 | Irish Potato Breeders Ltd | 168 Seapark Malahide, Dublin Ireland |
| 193 | Maribo UK Ltd | LN4 2DY Potterhankworth, Lincolnshire United Kingdom |
| 197 | International Seed Producers | Fordham Road C88 7AH Newmarket, Suffolk United Kingdom |
| 207 | Danisco | LN4 2DY Potterhankworth, Lincolnshire United Kingdom |
| 208 | Lion's Seeds Ltd | Bush Jonhnsons Research Station, Woodham Mortimer CM9 6SN Maidon, Essex United Kingdom |
| 210 | Boreal Plant Breeding | Myllytie 8 FIN-31600 Jokionen |
| 212 | Norddeutsche Pflanzenzucht Hans-Georg Lembke KG | Hohenleith D-2331 Holtsee |
| 218 | CPB Twyford Ltd | 56 Church Street SG8 7RE Thriplow, Royston, Hertfordshire United Kingdom |
| 219 | Saatzucht Bauer GmbH | Hofmarkstrasse 1, Postfach 1127 D-8407 Nieder Traubling |
| 222 | Sejet Plant Breeding | Norremarksvej 67 DK-8700 Horsens |
| 225 | Dani | Manor House Loughgall, Co Armagh Ireland |
| 226 | Rustica Prograin Génétique | Domain de Sandreau F-31700 Mondonville |
| 228 | Limagrain Genetics | F-63720 Chappes |
| 230 | DLF Trifolium A/S Dansk Planteforeadling | PB 19, Hojerupvej 31 DK-4660 Store, Heddinge |
| 237 | Gebr. Dippe Saatzucht GmbH | Postfach 3264 D-4902 Bad Salzuflen |
| 239 | Pioneer France | Epuiseau F-41290 Oucques |
| 240 | Asgrow Semences | Avenue Félix Louat, BP 80 F-60304 Senlis, Cedex |
| 241 | Semences Coop. de Pau | Avenue Gaston Phoebus, BP 29 F-64230 Lescar |
| 249 | Caussade Semences | Avenue de Meaux F-82300 Caussade |
| 250 | Mais Angevin ZI | Rue de la Vilaine, BP 59 F-49250 St Mathurin |
| 255 | Lochow-Petkus Belgium NV | Langstraat 130, B-3350 Neerhespen (Linter) |
| 261 | Petersen P.H. | Postfach 6 D-2391 Lundsgaard |
| 263 | Strengs Erben | Aspachhof D-8704 Uffenheim |
| 270 | Hybrinova | 16, avenue de la Baltique F-91953 Courtaboeuf Cedex |
| 273 | J. Joordens zaadhandel BV | Postbus 7823 5995 ZG Kessel Nederland |
| 284 | Advanta Seeds BV | Postbus 127 5250 AC Vlijmen Nederland |
| 288 | Novartis Seeds SA | 12, chemin de l'hobit F-31790 Saint-Sauveur |
| 297 | no name | no address |
| 1125 | Baywa AG | Habt Saatgutt-Karttuffelin, Postfach 810108, D-8000 Munchen 81 |
| 1132 | Nordsaat Saatzuchtgelsellschaft MBH | D-2322 Waternevestorf |