1887

Abstract

SUMMARY: Series of experiments were carried out both and on single conidial isolates of and . Relationships between colony type and sporulation were apparent in both species. In addition, isolates of showed relationships between degree of resistance of host source, width of host range and stability of cultural characters and pathogenicity during storage in culture. Isolates of showed no such relationships, cultural characters being invariably stable while pathogenicity rapidly declined in the storage conditions. Studies of nutritional requirements suggested no deficiencies in the synthetic abilities of either pathogen, but limiting nutritional factors were important. Isolates of both species which differed widely in pathogenicity and other characteristics, reacted similarly to various culture media.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-16-2-360
1957-04-01
2024-11-11
Loading full text...

Full text loading...

/deliver/fulltext/micro/16/2/mic-16-2-360.html?itemId=/content/journal/micro/10.1099/00221287-16-2-360&mimeType=html&fmt=ahah

References

  1. Buell C. B., Weston W. H. 1947; Application of the mineral oil conservation method to maintaining collections of fungus cultures. Amer. J. Bot 34:555
    [Google Scholar]
  2. Fothergill P. G., Ashcroft R. 1955; The nutritional requirements of Venturia inaequalis . J. gen. Microbiol 12:387
    [Google Scholar]
  3. Herbst W. 1936; Venturia pirina Aderhold. 1. Zur Formenmannigfaltigkeit des Pilzes. Gartenbauwiss 10:428
    [Google Scholar]
  4. Keitt G. W., Langford M. H. 1941; Venturia inaequalis (Cke.) Wint. 1. A groundwork for genetic studies. Amer. J. Bot 28:805
    [Google Scholar]
  5. Kirby A. H. M., Frick E. L. 1952; Modifications in the glass-slide spore-germination test for use in fungicide research. Rep. E. Mailing Res. Sta p. 161
    [Google Scholar]
  6. Kirkham D. S. 1956; A culture technique for Venturia spp. and a turbidimetric method for the estimation of comparative sporulation. Nature; Lond: 178550
    [Google Scholar]
  7. Küthe K. 1935; Zur Infektion und Kultur des Apfelschorfes, Venturia inaequalis (Cooke) Aderhold. Gartenbauwiss 9:405
    [Google Scholar]
  8. Langford M. H., Keitt G. W. 1942; Heterothallism and variability in Venturia pirina . Phytopathology 32:357
    [Google Scholar]
  9. Leben C., Keitt G. W. 1948; Venturia inaequalis (Cke.) Wint. V. The influence of carbon and nitrogen sources and vitamins on growth in vitro . Amer. J. Bot 35:337
    [Google Scholar]
  10. Miller H. J. 1949; Modifications on the slide-germination method of evaluating fungicides including the use of Venturia inaequalis and Phytopthora infestans . Phytopathology 39:245
    [Google Scholar]
  11. Montgomery H. B. S., Moore M. H. 1938; A laboratory method for testing the toxicity of protective fungicides. J. Pomol 15:253
    [Google Scholar]
  12. Palmiter D. H. 1934; Variability in monoconidial cultures of Venturia inaequalis . Phytopathology 24:22
    [Google Scholar]
  13. Pelletier R. L., Keitt G. W. 1954; Venturia inaequalis (Cke.) Wint. VI. Amino acids as sources of nitrogen. Amer. J. Bot 41:362
    [Google Scholar]
  14. Rudloff C. F. 1934a; Venturia inaequalis (Cooke) Aderhold. 1. Der Einfluss des Nährbodens auf den Pilz und die Erhaltung seiner Pathogenität. Gartenbauwiss 9:65
    [Google Scholar]
  15. Rudloff C. F. 1934b; Venturia inaequalis (Cooke) Aderhold. III. Zur Formenmannigfaltigkeit des Pilzes. Gartenbauwiss 9:105
    [Google Scholar]
  16. Rudloff C. F., Schmidt M. 1934; Venturia inaequalis (Cooke) Aderh. II. Zur Züchtung schorfwiderstandsfähiger Apfelsorten. Züchter 6:288
    [Google Scholar]
  17. Schmidt M. 1935; Venturia inaequalis (Cooke) Aderhold. IV. Weitere Beiträge zur Rassenfrage beim Erreger des Apfelschorfes. Gartenbauwiss 9:364
    [Google Scholar]
  18. Schmidt M. 1936a; Venturia inaequalis (Cooke) Aderhold. V. Weitere Untersuchungen über die auf verschiedenen Bäumen lebenden Populationen des Apfelschorfpilzes. Gartenbauwiss 10:422
    [Google Scholar]
  19. Schmidt M. 1936b; Venturia inaequalis (Cooke) Aderhold. VI. Zur Frage nach dem Vorkommen physiologisch spezialisierter Rassen beim Erreger des Apfel- schorfes. Erste Mitteilung. Gartenbauwiss 10:478
    [Google Scholar]
  20. Stanton W. R. 1951; The use of thin polythene sleeving for moist chambers in inoculation studies. Phytopathology 41:476
    [Google Scholar]
  21. Stanton W. R. 1953a; Field variation in Venturia pirina . Trans. Brit, mycol. Soc 36:90
    [Google Scholar]
  22. Stanton W. R. 1953b; Breeding pears for resistance to the pear scab fungus Venturia pirina Aderh. I. Variation in the pathogenicity of Venturia pirina . Ann. appl. Biol 40:184
    [Google Scholar]
/content/journal/micro/10.1099/00221287-16-2-360
Loading
/content/journal/micro/10.1099/00221287-16-2-360
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error