Zeitschrift für Vererbungslehre

, Volume 89, Issue 1, pp 80–93 | Cite as

Abnormal gametogenesis and embryo abortion in the pear variety beurré bedford (Pyrus communis)

  • G. J. Dowrick


Embryo Abortion Pyrus Communis Pear Variety 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Atwood, S. S., andP. Grun: cytogenetics of alfalfa. Bibliogr. genet. (s'Gravenhage)14, 138–185 (1951).Google Scholar
  2. Barber, H. N.: Chromosome behaviour inUvularia. III. Cooperation and balance in pollen grains. J. Genet.42, 245–257 (1941).Google Scholar
  3. —: The pollen grain division in theOrchidaceae. J. Genet.43, 97–103 (1942).Google Scholar
  4. Brink, R. A., andD. C. Cooper: Somatoplastic sterility inMedicago sativa. Proc. Nat. Acad. Sci. U.S.A.24, 497–499 (1939).Google Scholar
  5. Cooper, D. C., andR. A. Brink: Partial self0incompatibility and the collapse of fertile ovules as factors affecting seed formation in alfalfa. J. Agricult. Res.60, 453–472 (1940).Google Scholar
  6. ——: Seed collapse following matings between diploid and tetraploid races ofLycopersicon pimpinellifolium. Genetics30, 376–401 (1945).Google Scholar
  7. La Cour, L. F.: Nuclear differentiation in the pollen grain. Heredity (Lond.)3, 319–337 (1949).Google Scholar
  8. Lebedeff, G. A.: Failure of cytokinesis during microsporogenesis inZea mays following heat treatment. Cytologia10, 434–442 (1940).Google Scholar
  9. Maheshwari, P.: An introduction to the embryology of angiosperms. New York: McGraw Hill Book Co. Inc. 1950.Google Scholar
  10. Müntzing, A.: Hybrid incompatibility and the origin of polyploidy. Hereditas (Lund)18, 33–55 (1933).Google Scholar
  11. Sansome, E. R., S. Satina andA. F. Blakeslee: Disintegration of ovules in tetraploid-diploid and in incompatible species crosses inDatura. Bull. Torrey Bot. Club69, 405–420 (1942).Google Scholar
  12. Sax, K., andL. Husted: Polarity and differentiation in microspore development. Amer. J. Bot.23, 606–609 (1936).Google Scholar
  13. Thomas, P. T.: John Innes Horticultural Institution Annual Report 1942a.Google Scholar
  14. ——: A useful abnormality of pollen in a pear. Nature (Lond.)149, 168 (1942b).Google Scholar
  15. Wanscher, J. H.: Contributions to the cytology and life history of apple and pear. Kon. Veterin.-Landsbohøjsk. Aarskr.1939, 21–70.Google Scholar

Copyright information

© Springer-Verlag 1958

Authors and Affiliations

  • G. J. Dowrick
    • 1
  1. 1.John Innes Horticultural InstitutionHertfordEngland

Personalised recommendations