NATURAL SELECTION OF ALLOZYME POLYMORPHISMS: A MICROSITE TEST REVEALING ECOLOGICAL GENETIC DIFFERENTIATION IN WILD BARLEY
Open Access
- 1 January 1986
- Vol. 40 (1) , 13-20
- https://doi.org/10.1111/j.1558-5646.1986.tb05713.x
Abstract
Allozymic variation in proteins encoded by 25 loci was analyzed electrophoretically in 1982 and 1983 in 356 individual plants from a dense population of wild barley, Hordeum spontaneum, the progenitor of cultivated barley. The test involved six microniches organized in a mosaic pattern in the open Tabor oak forest at Neve Ya'ar, Israel. The microniches were i) sun‐soil, ii) sun‐rock, iii) shade‐soil, iv) shade‐rock, and the contact zones: v) soil periphery of the sun‐rock microniche, and vi) soil periphery of the shade‐rock microniche. Discriminant analysis indicated significant multilocus allozymic differentiation between the microniches. Our results suggest that allozyme polymorphisms in wild barley are at least partly adaptive and differentiate predominately by microniche ecological selection, rather than by stochastic processes and/or neutrality of allozymic variants.Funding Information
- Israel Discount Bank Chair of Evolutionary Biology
- Ancell-Teicher Research Foundation for Genetics
- Molecular Evolution
This publication has 32 references indexed in Scilit:
- Correlation of ecological factors and allozymic variations with resistance toErysiphe graminis hordei inHordeum spontaneum in Israel: Patterns and applicationÖsterreichische botanische Zeitschrift, 1984
- Microgeographic edaphic differentiation in allozyme polymorphisms of wild barley (Hordeum spontaneum, Poaceae)Österreichische botanische Zeitschrift, 1981
- Population Biology of Avena. VIII. Colonization Experiment as a Test of the Role of Natural Selection in Population DivergenceAmerican Journal of Botany, 1980
- Genetic Diversity and Environmental Associations of Wild Barley, Hordeum spontaneum, in IsraelEvolution, 1979
- Influence of Microhabitat Heterogeneity on Gene Frequency Distribution and Gametic Phase Disequilibrium in Avena barbataEvolution, 1979
- Thermal selection of allozyme polymorphisms in barnaclesNature, 1977
- Isolation by distance in Liatris cylindraceaNature, 1974
- Niche, Habitat, and EcotopeThe American Naturalist, 1973
- Evolutionary Rate at the Molecular LevelNature, 1968
- Morphological Variation and Width of Ecological NicheThe American Naturalist, 1965