Cytogenetic characterization of six populations of Narcissus tazetta L. (Amaryllidaceae) from western Mediterranean
- Laboratoire de Génétique, Biochimie et Biotechnologies Végétales, Université Constantine 1. 25000 Constantine, Algeria.
- Faculty of Forestry, University of Sarajevo, Zagrebacka 25, 71000 Sarajevo, Bosnia and Herzegovina.
- CNRS, Ecologie, Systématique & Evolution, UMR 8079, CNRS-UPS-AgroParisTech, Université Paris-Sud,Bat. 360, 91405 Orsay, France.
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Narcissus tazetta L. is one of the most widespread species of the genus Narcissus L., characterized by a high morphological and karyological variability. Six populations of the wild western Mediterranean N. tazetta were investigated for their chromosome numbers and cytogenetic analysis. The investigated populations exhibit a same diploid chromosome number (2n=20). The total length of the diploid chromosome set was 116.72 µm. Fluorochrome banding and FISH revealed variability in the number and intensity of CMA positive bands (CMA+) and rDNA signals depending on population and presence or absence of B chromosomes. Two types of B chromosomes were detected, one of which carried 35S rDNA locus. Any correlation between presence of Bs and particular environmental conditions did not find in this study.
[Boukhenane Meriem, Khalfallah Nadra, Pustahija Fatima, Siljak-Yakovlev Sonja (2015); Cytogenetic characterization of six populations of Narcissus tazetta L. (Amaryllidaceae) from western Mediterranean Int. J. of Adv. Res. 3 (Nov). 1538-1546] (ISSN 2320-5407). www.journalijar.com
