ISSN 1392-3196 / e-ISSN 2335-8947
Zemdirbyste-Agriculture, vol. 105, No. 2 (2018), p. 183–190
Genetic diversity of populations of Bidens genera invasive and native species in Lithuania
Regina VYŠNIAUSKIENĖ, Vida RANČELIENĖ, Donatas NAUGŽEMYS, Jolanta PATAMSYTĖ, Zofija SINKEVIČIENĖ, Jurgita BUTKUVIENĖ, Donatas ŽVINGILA
River riparian ecosystems deteriorate because of anthropogenic factors that are related to industry, intensive agriculture and tourism. Two native species, Bidens tripartita and B. cernua, are weeds widespread in Lithuania on river banks and other habitats. An alien species, B. frondosa, is also widespread in the same habitats. We investigated the genetic diversity of B. frondosa, compared its population structure to that of related species and assessed the possibility of genetic interaction between B. frondosa and native congeners. Genetic analysis of populations was based on inter-simple sequence repeats (ISSR) polymorphism. Our results revealed high genetic differentiation in the B. frondosa populations (48.2%) and high genotypic diversity (i = 0.99). Bayesian cluster analysis using the program Structure revealed signs of gene flow between B. frondosa and the native species; however, principal coordinate analysis did not support this result. Our results do not indicate the role of interspecific hybridization in the invasiveness of B. frondosa.
Key words: Bidens, hybridization, invasive species, population genetic structure.
Full text: 105_2_str24.pdf