In:
Nordic Journal of Botany, Wiley, Vol. 37, No. 11 ( 2019-11)
Abstract:
We studied genetic diversity in 54 populations of nine sexual and apomictic species of the genus Chondrilla ( C. acantholepis , C. ambigua , C. brevirostris , C. canescens , C. graminea , C. juncea , C. laticoronata, C. latifolia and C. pauciflora ) in SE European Russia and neighboring territories of NW Kazakhstan. We analysed the trn T– trn F region of plastid DNA and the internal transcribed spacer of ribosomal DNA (ITS1–5.8S–ITS2) using statistical parsimony, maximum likelihood and neighbor net methods. Two major evolutionary lineages, roughly corresponding to the two subgenera traditionally recognized in the region, were revealed. Within the first evolutionary lineage (subgenus Brachyrhynchus ), the sexual diploid C. ambigua and its putatively hybrid apomictic derivatives C. brevirostris, C. laticoronata and C. pauciflora could be recognized. Their identity was also confirmed by analyses of ISSR markers. The second evolutionary lineage (subgenus Chondrilla ) comprises C. juncea, C. acantholepis, C. canescens, C. graminea and C. latifolia in European Russia, but analyses of morphological variability and the genealogy of plastid and nuclear markers favor their treatment as the single facultatively apomictic species C. juncea . The results demonstrate that an apomictic mode of reproduction does not necessarily result in the formation of genetically separated microspecies.
Type of Medium:
Online Resource
ISSN:
0107-055X
,
1756-1051
DOI:
10.1111/njb.2019.v37.i11
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2406507-9
SSG:
12
Permalink