Open AccessGene flow in parapatric plant populations of Agrostis tenuis L.and Festuca rubra L.
Author(s) -
S. Karataglis
Publication year - 2014
Publication title -
acta societatis botanicorum poloniae
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 29
eISSN - 2083-9480
pISSN - 0001-6977
DOI - 10.5586/asbp.1986.043
Subject(s) - parapatric speciation , agrostis , festuca rubra , gene flow , festuca , biology , botany , agronomy , poaceae , gene , genetics , genetic variation
The gene flow between populations of Agrostis tennis L. and Festuca rubra L. on a Zn/Pb mine and adjacent areas, which met at a distance of 150 m from the mine boundaries, was studied. It was found that the mine populations exhibit a high index of tolerance to Zn and Pb, elements encountered in the soil. Those outside the mine show relatively high indices of tolerance towards Zn and Pb, despite the fact that these elements are absent from the soil. On the other hand, the index of tolerance towards Cu, absent from the soil, of populations inside and outside the mine, was very low and did not differ from that of the control. Time difference in the flowering of these parapatric populations acts against gene flow thus resulting in a tendency for the neighbouring populations to isolate