Genetic differentiation of black saxaul, Haloxylon aphyllum (Chenopodiaceae), along a soil salinity gradient in the Kyzylkum Desert

作者：Shuyskaya E V^*; Gismatullina L G; Toderich K H; Voronin P Yu; Soldatova N V

来源：Russian Journal of Ecology, 2012, 43(4): 302-306.

DOI：10.1134/S1067413612040157

• genetic differentiation
• Haloxylon aphyllum
• soil salinity
• the Kyzylkum Desert

Populations of Haloxylon A phyllum in the Kyzylkum Desert have been found to be markedly deficient in heterozygotes at a medium level of genetic diversity (P (95) = 0.56, A = 1.67, H (o) = 0.14, H (e) = 0.28). Spatial genetic differentiation of these populations have been revealed along a soil salinity gradient (from 0 to 0.5 mmol Na+/g), with their genetic diversity reaching a maximum (H (o) = 0.21-0.25, H (e) = 0.25-0.27) in areas with a moderate salinity level (0.05-0.1 mmol Na+/g). Locus Got-2 can serve as a marker of this differentiation (Fst(Got-2) = 0.4).

• 出版日期2012-7