Gene flow and population structure in Allochrusa (caryophylloideae, caryophyllaceae) with the use of molecular markers
2021
Chen, Weimiao | Khayatnezhad, Majid | Sarhadi, Nima
Allochrusa Bunge is a genus of subfamily Caryophylloideae Rabeler & Bittrich contains about 8 species distributed in Turkey, Central Asia, Afghanistan, Caucasus, Transcaucasus and Iran. Three species of Allochrusa versicolor, A. bungei and A. persica occur in Iran show some degree of morphological overlaps that make the species delimitation difficult. Till present time, there has been no detailed information available on morphological and genetic structure of these species in the country. The aims of the present study are: 1) to find the diagnostic value of SCoT markers in delimitation of Allochrusa species, 2) to find the genetic structure of these taxa in Iran, and 3) to investigate the species inter-relationship. For this study, 97 randomly collected plants from 7 geographical populations in three Allochrusa species were used. We encountered extensive within species genetic and morphological diversity. SCoT molecular markers could delimit the studied species. AMOVA and STRUCTURE analysis revealed that the species of Allochrusa are genetically differentiated. The Mantel test showed correlation between genetic distance and geographical distance of the populations studied. Genetic affinity of the studied species has been discussed.
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