Resumen de Genetic diversity and population structure of Alyssum stapfii (Brassicaceae) in Iran
Saeedeh Sadat Mirzadeh Vaghefi, Masoud Sheidai, Mostafa Assadi
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.
