Abstract
This study concerns the evaluation of micromorphological and anatomical characters of fruit (achene-cypsela) in 12 Turkish endemic Tripleurospermum taxa using multivariate analyses (cluster analysis, principal component analysis, one-way analysis of variance). Pericarp in all taxa examined is mainly composed of several layers of parenchymatous and sclerenchymatous cells with one vascular bundle in each rib. In the achene, the thickness and width of lateral and adaxial ribs with presence or absence of a slime envelope have high taxonomic value for Tripleurospermum at interspecific levels. The slime envelope formation is also correlated with ploidy levels and habitats of some taxa in Tripleurospermum.
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Acknowledgments
The authors thank Dr. Faik Ahmet Ayaz for collecting of some plant materials; Dr. Melahat Ozcan and Nursen Aksu for technical assistance and collecting of some plant materials; anonymous reviewers for comments that improved the manuscript considerably; the Scientific and Technological Research Council of Turkey (TUBITAK, TBAG project no. 106T162) and the Research Fund of Karadeniz Technical University (project no. 2007.111.004.8) for financial supports.
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Inceer, H., Bal, M., Ceter, T. et al. Fruit structure of 12 Turkish endemic Tripleurospermum Sch. Bip. (Asteraceae) taxa and its taxonomic implications. Plant Syst Evol 298, 845–855 (2012). https://doi.org/10.1007/s00606-012-0596-6
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DOI: https://doi.org/10.1007/s00606-012-0596-6