1. Comparisons of rate of photosynthesis and tuber yield of a dihaploid, its chromosome-doubled derivatives and parent

   • M. J. De Maine

   OriginalPaper Pages: 251 - 260

2. Zum Nachweis des Tabakrattle-Virus in Kartoffeln

   • Hans-L. Weidemann

   OriginalPaper Pages: 261 - 269

3. Der Einfluss von 2-Chloräthylphosphonsäure auf die Knollenzahl und den Ertrag von Kartoffelsorten unterschiedlicher Reifezeit

   • H. Von Meltzer

   OriginalPaper Pages: 271 - 284

4. The relative efficiency of some aphid species as vectors of potato virus Y^o (PVY^o)

   • R. Sigvald

   OriginalPaper Pages: 285 - 290

5. The measurement of chlorogenic acid in potato leaf extracts by high-pressure liquid chromatography

   • G. D. Lyon
   • H. Barker

   Short Communication Pages: 291 - 295

6. Growth rate and carbohydrate metabolism of potato tubers exposed to high temperatures

   • A. Krauss
   • H. Marschner

   Short Communication Pages: 297 - 303

7. Simulation of growth and yield of the potato crop

   • D. E. van der Zaag

   Review Pages: 305 - 306

8. Rapport de la Réunion de la Section Physiologie de l'EAPR à Helsinki, Finlande, du 25–29 juillet 1983

   • W. Reust

   Reports Pages: 307 - 320

9. Council notices

   • D. E. van der Zaag

   Association News Pages: 321 - 324

10. Section notices

    Association News Pages: 325 - 327

11. Circulation and balance sheet of Potato Research

    Association News Pages: 328 - 329

12. Position available

    News Pages: 330 - 330

13. Nitrate in potatoes. 1. The effect of fertilization and storage on the nitrate content in 5 genotypes grown in widely separated localities

    • J. Gislason
    • H. K. Dahle
    • K. Ronsen

    OriginalPaper Pages: 331 - 337

14. Studies on the etiology of tuber necrotic ringspot disease in potato

    • L. Beczner
    • J. Horváth
    • H. Förster

    OriginalPaper Pages: 339 - 352