Genetic diversity and population structure of Alyssum stapfii (Brassicaceae) in Iran

• Saeedeh Sadat Mirzadeh Vaghefi ^[1] ; Masoud Sheidai ^[1] ; Mostafa Assadii ^[2]
  1. [1] Shahid Beheshti University of Medical Sciences

     Shahid Beheshti University of Medical Sciences

     Irán

     
  2. [2] Research Institute of Forests and Rangelands

     Research Institute of Forests and Rangelands

     Irán

     
• Localización: Phytologia Balcanica: International Journal of Balkan Flora and Vegetation, ISSN 1310-7771, Vol. 22, Nº. 1, 2016, págs. 7-13
• Idioma: inglés
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• Resumen

  • A. stapfii is growing in different wild regions of Iran and forms several local populations. Genetic study of 15 different Iranian populations of A. stapfii using ISSR molecular markers has revealed a high degree of within-population (74%) and among (26%) populations genetic diversity. AMOVA and Gst analyses produced a significant difference. Nm estimation and population assignment test revealed certain degree of gene flow/shared alleles between these populations. Mantel test produced significant correlation between genetic distance and geographical distance of the studied populations (r = 0.30, P ≤ 0.01). STRUCTURE and K-means clustering showed the populations’ genetic stratification. Mantel test revealed that the neighboring populations tend to be genetically more similar to each other. NJ tree showed gene flow/shared alleles in the studied populations. A combination of genetic divergence, limited gene flow and local adaptation play an important role in the diversification of A. stapfii.