Variability in isozyme gene frequency in the tropical pasture legume, 'Greenleaf desmodium

Authors

  • Bruce C. Imrie Division of Tropical Crops and Pastures, CSIRO, 306 Carmody Road, St Lucia, Queensland 4067, Australia
  • David Blogg Division of Tropical Crops and Pastures, CSIRO, 306 Carmody Road, St Lucia, Queensland 4067, Australia

Keywords:

lsozymes, Inheritance, Desmodium intortum, Desmodium sandwicense, Selection, Genetic drift

Abstract

Electrophoretic analysis of lsozymes of PGI (EC 5.3.1.9) and PGM (EC 2.7.5.1) in Desmodium was used to demonstrate the presence of D. sandwicense alleles in cv. 'Greenleaf' of D. intorum. The frequency of D. sandwicense alleles was higher in samples from one area of Australia than in samples from another area. It was concluded that natural selection against these D. sandwicense alleles occurred in the second area, whereas genetic drift was negligible in the first.

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Issue

Volume 60 Number 3

Section

Research Papers