Afficher la couverture 'Discovery of Juniperus sabina var. balkanensis R. P. Adams and A. N. Tashev in Albania and relictual polymorphisms found in nrDNA | Adams, Robert, P' en grand format
/5

0 avis

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

Archive ouverte

Adams, Robert, P | Farhat, Perla | Shuka, Lulëzim | Siljak-Yakovlev, Sonja

Edité par CCSD ; Texensis Publishing -

International audience. 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 (ACGACAGT) plants. Two plants were homozygous for the 8 sites and they both had the type 1 pattern (GGACCCAG). The type 2 pattern (ACGACAGT) 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.

Suggestions

Du même auteur

The origin of Juniperus xpfitzeriana, an allo-tetraploid hybrid of J. chinensis x J. sabina

Archive ouverte | Adams, Robert, P | CCSD

International audience. Juniperus xpfitzeriana is one of the most commonly cultivated junipers in the world. The origin of J. xpfitzeriana has remained speculative, but it is thought to be a hybrid of J. chinensis x...

Gene flow between diploid and tetraploid junipers - two contrasting evolutionary pathways in two Juniperus populations

Archive ouverte | Farhat, Perla | CCSD

International audience. Abstract Background Gene flow and polyploidy have been found to be important in Juniperus evolution. However, little evidence has been published elucidating the association of both phenomena ...

First evidence for allotriploid hybrids between Juniperus thurifera and J. sabina in a sympatric area in the French Alps

Archive ouverte | Farhat, Perla | CCSD

International audience. Context: Interspecific hybridization and polyploidy are important evolutionary phenomena in vascular plants. Natural hybridization between species living in sympatry can sometimes occur. Less...

Chargement des enrichissements...