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

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 in juniper taxa in the wild. Two main areas were studied in Spain (Eastern Iberian Range and Sierra de Baza) with both diploid and tetraploid taxa present in sympatry. Gene flow and ploidy level were assessed for these taxa and the resulted offspring.

Results

Twenty-two allo-triploid hybrids between J. sabina var. sabina and J. thurifera were found in the Eastern Iberian Range population. However, in the Sierra de Baza population no triploids were found. Instead, 18 allo-tetraploid hybrids between two tetraploid taxa: J. sabina var. balkanensis and J. thurifera were discovered. High genetic diver

SUBMITTER: Farhat P 

PROVIDER: S-EPMC7650182 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature