Nevo Eviatar, Beiles Avigdor, Kaplan Diane, Golenberg Edward M, Olsvig-Whittaker Linda, Naveh Ze'ev
Institute of Evolution, University of Haifa, Mt. Carmel, Haifa, 31999, Israel.
Evolution. 1986 Jan;40(1):13-20. doi: 10.1111/j.1558-5646.1986.tb05713.x.
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.
1982年和1983年，对来自栽培大麦的野生祖先——野生大麦密集种群的356株个体植物进行了电泳分析，以研究由25个基因座编码的蛋白质中的等位酶变异。试验涉及以色列内夫亚尔的开阔塔博尔橡树林中以镶嵌模式组织的六个微生境。这些微生境分别是：i）阳光充足的土壤，ii）阳光充足的岩石，iii）阴凉的土壤，iv）阴凉的岩石，以及接触区：v）阳光充足的岩石微生境的土壤边缘，和vi）阴凉的岩石微生境的土壤边缘。判别分析表明微生境之间存在显著的多位点等位酶分化。我们的结果表明，野生大麦中的等位酶多态性至少部分是适应性的，并且主要通过微生境生态选择而分化，而不是通过随机过程和/或等位酶变体的中性。
