1. Isolation and physicochemical characterization of mitochondrial DNA from cultured cells ofPetunia hybrida

   • A. J. Kool
   • J. M. de Haas
   • G. A. M. van Marrewijk

   Originals Pages: 223 - 233

2. Book reviews

   • J. Sneep
   • H. Veen

   BookReview Pages: 234 - 234

3. Totipotency of tomato protoplasts

   • E. A. Shahin

   Originals Pages: 235 - 240

4. Body weight and growth rate in laboratory lines ofPoecilia reticulata reared on two different diets

   • G. Rocchetta
   • M. L. Vanelli
   • C. Pancaldi

   Originals Pages: 241 - 245

5. Book review

   • H. C. M. de Stigter

   BookReview Pages: 246 - 246

6. Heritability of juvenile characters of white spruce (Picea glauca (Moench.) Voss.) in central Newfoundland, Canada

   • M. A. K. Khalil

   Originals Pages: 247 - 251

7. Book review

   • D. D. Baltensperger

   BookReview Pages: 252 - 252

8. High amylose mutants of rice,Oryza sativa L.

   • M. Yano
   • K. Okuno
   • T. Omura

   Originals Pages: 253 - 257

9. Book reviews

   • C. K. Stumm
   • J. A. W. M. v.d. Donk

   BookReview Pages: 258 - 258

10. Genetic architecture of a heterotic cross between two populations of maize

    • A. S. Khehra
    • H. Singh
    • B. S. Dhillon

    Originals Pages: 259 - 261

11. Book reviews

    • G. K. Gottsberger
    • U. Langridge

    BookReview Pages: 262 - 262

12. Intrachromosomal mapping of the nucleolar organiser region relative to three marker loci on chromosome 1B of wheat (Triticum aestivum)

    • J. W. Snape
    • R. B. Flavell
    • P. I. Payne

    Originals Pages: 263 - 270

13. The frequency of polyembryonic seedlings and polyploids from ms₁ soybean

    • Long-Fang Oliver Chen
    • H. E. Heer
    • R. G. Palmer

    Originals Pages: 271 - 277

14. Book reviews

    • H. F. Linskens

    BookReview Pages: 278 - 278

15. Characterization of a cytoplasmically inherited yellow foliar mutant (cyt-Y ₃) in soybean

    • R. C. Shoemaker
    • A. M. Cody
    • R. G. Palmer

    Originals Pages: 279 - 284

16. Inheritance of internode and culm length in hexaploid Triticale

    • J. M. Carrillo
    • A. Monteagudo
    • E. Sanchez-Monge

    Originals Pages: 285 - 291

17. Book reviews

    • H. F. Linskens
    • J. F. Jackson

    BookReview Pages: 292 - 292

18. Heterosis in the hybridisation between the monoecious and dioecious subspecies ofEcballium elaterium (L.) Richard

    • J. Gonzalez-Julian
    • F. Galan-Estella

    Originals Pages: 293 - 295

19. Book reviews

    • J. F. Jackson
    • I. K. Vasil

    BookReview Pages: 296 - 296

20. Genetic analysis of instability inPetunia hybrida

    • M. Doodeman
    • F. Bianchi

    Originals Pages: 297 - 304

21. A genetic classification of potato cultivars based on allozyme patterns

    • J. L. Oliver
    • J. M. Martinez-Zapater

    OriginalPaper Pages: 305 - 311

22. Book reviews

    • H. F. Linskens

    BookReview Pages: 312 - 312

23. Identification of the chromosomes of the rye translocation tester set

    • J. Sybenga
    • J. van Eden
    • B. W. Roeterdink

    OriginalPaper Pages: 313 - 316

24. Effects of random and non-random errors on phenotypic selection in autotetraploids

    • D. E. Rowe

    OriginalPaper Pages: 317 - 323

25. Book reviews

    • H. F. Linskens

    BookReview Pages: 324 - 324

26. Comparative genetic analyses of metric traits using diallel and factorial mating designs in bread wheat

    • D. S. Virk
    • A. S. Khehra
    • B. S. Dhillon

    OriginalPaper Pages: 325 - 328

27. A rapid screening technique for the detection of repeated DNA sequences in plant tissues

    • J. Hutchinson
    • A. Abbott
    • R. B. Flavell

    OriginalPaper Pages: 329 - 333

28. Book review

    • H. F. Linskens

    BookReview Pages: 334 - 334

29. Announcement

    Announcement Pages: 334 - 334