Genetic structure of dioecious and trioecious Salix myrsinifolia populations at the border of geographic range

• DOI: 10.1007/s11295-016-1096-6
• Publication Date: 2017-01-10T07:21:01Z
• Authors: P. Mirski; E. Brzosko; I. Jędrzejczyk; J. Kotowicz; B. Ostrowiecka; A. Wróblewska
• Keywords: 0106 biological sciences; Genetics; Forestry; Horticulture; 15. Life on land; Molecular Biology; 01 natural sciences

Gene flow in plant populations is heavily affected by species sexual systems. In order to study the effect of systems on genetic structure, we examined plastid and nuclear DNA 12 dioecious (males females) 18 trioecious (males, females hermaphrodites) Salix myrsinifolia—a boreal shrub with slow range expansion. Populations were located along latitudinal gradients across submarginal marginal parts range. Individuals each sex morph all hexaploid. We identified 10 chloroplast haplotypes scored 205 polymorphic bands amplified fragment length polymorphism. found that differed from via presence four unique significant difference Nei's gene diversity index (0.119 vs. 0.116) down-weighed marker value (1.17 1.02). The latter parameter, together haplotype nucleotide diversity, significantly decreased latitude similar expansion front. Also, 89% hermaphrodite individuals belong one distinct tree parsimony network haplotype. This frequency towards suspect hermaphrodites may represent a trade-off between possibility producing progeny single variability loss through autogamy. S. myrsinifolia benefits under colonization events. phenomenon no longer gain closer core