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A Comparison Between Quantitative and Biochemical Variation in the Wild Barley Hordeum murinum

Barbara E. Giles
Evolution
Vol. 38, No. 1 (Jan., 1984), pp. 34-41
DOI: 10.2307/2408544
Stable URL: http://www.jstor.org/stable/2408544
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Comparison Between Quantitative and Biochemical Variation in the Wild Barley Hordeum murinum
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Abstract

An electrophoretic survey of 58 populations of Hordeum murinum, an inbreeding barley from Britain, Europe, and the Mediterranean region was carried out using seven enzyme and protein systems. The results indicated that little genetic differentiation in enzyme characters had occurred between populations and that most populations tended to be monomorphic. In contrast, an analysis of the quantitative variation in several morphological characters among populations and among families of a single population revealed significant levels of variation both within and between populations for most characters. This contrast suggests that caution needs to be exercised when general or organismic pictures of evolution are constructed from a limited number of characters.

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