Hostname: page-component-7b7567c8c-tnzcf Total loading time: 0 Render date: 2026-11-15T02:39:33.580Z Has data issue: false hasContentIssue false
  • English
  • Français

Two-environment selection with inbreeding in Schizophyllum commune

Published online by Cambridge University Press:  14 April 2009

V. Connolly and
G. Simchen
V. Connolly
Affiliation:
Department of Genetics, The University, Birmingham
G. Simchen
Affiliation:
Department of Genetics, The University, Birmingham
Rights & Permissions [Opens in a new window]

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

In two-way selection for growth rate in the fungus Schizophyllum commune in two environments (20 °C and 30 °C) response for low growth rate was always greater than for high. This asymmetry was due to inbreeding depression combined with a greater selection differential associated with the low lines in the high temperature environment. Despite the high level of inbreeding applied, two low selection lines derived from the same source (parental isolate 2) showed no decrease in genetic variance during selection. This maintenance of genetic variance was associated with a decrease in stability of development relative to the corresponding high selection lines.

Information

Type
Research Article
Information
Genetics Research , Volume 22 , Issue 1 , August 1973, pp. 25 - 36
Copyright
Copyright © Cambridge University Press 1973

References

REFERENCES

Connolly, V. & Simchen, G. (1968). Linkage to the incompatibility factors and maintenance of genetic variation in selection lines of Schizophyllum commune. Heredity 23, 387–402.CrossRefGoogle Scholar
Falconer, D. S. (1953). Selection for large and small size in mice. Journal of Genetics 51, 470–501.CrossRefGoogle Scholar
Ryan, F. J., Beadle, G. W. & Tatum, E. L. (1943). The tube method of measuring the growth rate of Neurospora. American Journal of Botany 30, 784–799.CrossRefGoogle Scholar
Simchen, G. (1966 a). Monokaryotic variation and haploid selection in Schizophyllum commune. Heredity 21, 241–263.CrossRefGoogle Scholar
Simchen, G. (1966 b). Fruiting and growth rate among dikaryotic progeny of single wild isolates of Schizophyllum commune. Genetics 53, 1151–1165.CrossRefGoogle ScholarPubMed
Simchen, G. & Jinks, J. L. (1964). The determination of dikaryotic growth rate in the basidio-mycete Schizophyllum commune: A biometrical analysis. Heredity 19, 629–649.CrossRefGoogle ScholarPubMed
Wright, S. (1951). The genetical structure of populations. Annals of Eugenics 15, 323–354.CrossRefGoogle ScholarPubMed