Discovery of Juniperus sabina var. balkanensis R. P. Adams and A. N. Tashev in Albania and relictual polymorphisms found in nrDNA

摘要

Additional analyses of trnS-trnG and nrDNA from specimens from Albania revealed the presence of J. sabina var. balkanensis. Careful chromatogram analysis of eight (8) polymorphic sites in nrDNA revealed that 6 of the 8 plants were polymorphic (RSRMYRK or RSRMARK) and apparently hybrids between type 1 GGACCCAG and type 2 (ACGATAGT) plants. Two plants were homozygous for the 8 sites and they both had the type 1 pattern (GGACCCAG). The type 2 pattern (ACGATAGT) was not found, but due to the presence of hybrids, it probably grows in the area. These two nrDNA types appear to have arisen via hybridization with a J. thurifera ancestor. The two types often are found in both v. sabina and v. balkanensis populations. Published on-line www.phytologia.org Phytologia 100(2): 187- 194 (Sep 22, 2018). ISSN 030319430.