1. The colour-differences in Epipactis helleborine (L.) Cr. Wats. & Coult., and the selection of the genetical varieties by environment

   • J. Weijer

   OriginalPaper Pages: 1 - 32

2. The equilibrium of a self-incompatible polymorphic species

   • D. J. Finney

   OriginalPaper Pages: 33 - 64

3. The earliest illustrations of chromosomes

   • M. J. Sirks

   OriginalPaper Pages: 65 - 76

4. Cytological behaviour of some inter-specific hybrids in the genus Solanum, sect. Tuberarium

   • R. Prakken
   • M. S. Swaminathan

   OriginalPaper Pages: 77 - 101

5. Chromosome number and chromosome behaviour of F₁ and F₂ plants of the crossSolanum phureja x Solanum tuberosum

   • A. Koopmans
   • A. H. van der Burg

   OriginalPaper Pages: 102 - 116

6. Genetics and morphology of the genotype “asymmetric” with special reference to its “Abnormal abdomen” character

   • F. H. Sobels

   OriginalPaper Pages: 117 - 279

7. Studies on the cytogenetics of six species of Pennisetums and their comparative morphology and anatomy

   • N. J. Hrishi

   OriginalPaper Pages: 280 - 356

8. Crossing experiments withGlycine soja andG. gracilis

   • Kôtarô Karasawa

   OriginalPaper Pages: 357 - 358

9. Changes in sex in the flowers of the hybridSolanum rybinii × S. chacoense

   • A. Koopmans

   OriginalPaper Pages: 359 - 380

10. The cytology of haploid plants ofSolanum demissum

    • H. W. Howard
    • M. S. Swaminathan

    OriginalPaper Pages: 381 - 391

11. Junctions in inbreeding

    • J. H. Bennett

    OriginalPaper Pages: 392 - 406

12. Chromosome numbers of Satsuki,Rhododendron lateritium P1

    • T. Hosoda
    • A. Moriya
    • S. Sarashima

    OriginalPaper Pages: 407 - 409

13. Somatic reduction in untreated leguminous plants

    • A. K. Sharma
    • Dipti Bhattacharjee

    OriginalPaper Pages: 410 - 414

14. A hereditary lethal abnormality of the beak in Barnevelders

    • Elly G. Broekhuizen
    • Ir M. van Albada

    OriginalPaper Pages: 415 - 429

15. The genetics of melezitose fermentation in Saccharomyces

    • Carl C. Lindegren
    • Gertrude Lindegren

    OriginalPaper Pages: 430 - 444

16. Genetic studies on Eggplant (Solanum melongena L.)

    • K. Gotoh

    OriginalPaper Pages: 445 - 452

17. Genetic studies on eggplant (Solanum melongena L.)

    • K. Gotoh

    OriginalPaper Pages: 453 - 467

18. Adaptation and the breeding system in groundsel

    • Gordon Haskell

    OriginalPaper Pages: 468 - 484