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The Chromosome Complements of Shrubby Oxalis Species from South America
Daniel de Azkue and Arturo Martinez
Plant Systematics and Evolution
Vol. 141, No. 3/4 (1983), pp. 187-197
Published by: Springer
Stable URL: http://www.jstor.org/stable/23642759
Page Count: 11
You can always find the topics here!Topics: Species, Chromosomes, Karyotype, Tropical rain forests, Biological taxonomies, Inflorescences, Chromosome morphology, Forest ecology, Evolution, Acrocentric chromosomes
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Twenty species of shrubby Oxalis species native in South America were arranged in six groups according to their karyotype similarities. The first group includes more than half of the species studied, all with 2 n = 12 relatively small metacentric chromosomes. The rest of the species from the other groups has different basic chromosome numbers, and exhibits various degrees of chromosome asymmetry and size increase. These latter groups apparently have specialized to habitats with low light intensity such as the forest undergrowth in contrast to the frist group whose members live in open areas (i.e., grasslands, savannas etc.).
Plant Systematics and Evolution © 1983 Springer