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- Title
Genome Size Variation in Malus Species.
- Authors
Höfer, Monika; Meister, Armin
- Abstract
The nuclear DNA content for 256 different accessions belonging to 26 primary Malus species and 20 species hybrids was estimated by flow cytometry using propidium iodide. Diploids ranged from 1.245 (M. tschonoskii) to 1.653 pg per 2C nucleus (M. florentina). As our study covered complete phylogenetic and geographic representation, preliminary conclusions between nuclear DNA content and geographical and taxonomic features could be drawn. The data indicated that species found far from the centre of origin in Asia clustered into separate sections and series and possessed higher DNA content. These are M. trilobata and M. florentina the only two species existing in South-East Europe on one hand; M. ioensis and 3× and 4× species M. ×heterophylla, M. ×platycarpa, M. glaucescens, M. angustifolia, M. lancifolia and M. coronaria-in East and Central North America on the other hand. A significantly decreased 1C× DNA content was observed with the increase in ploidy for six species.
- Subjects
PLANT variation; PLANT breeding research; PLANT genetics; DNA; APPLES; PLANT phylogeny; CYTOMETRY; CELL nuclei; QUANTITATIVE research; PHYSIOLOGY
- Publication
Journal of Botany, 2010, p1
- ISSN
2090-0120
- Publication type
Article
- DOI
10.1155/2010/480873