Salomon, Björn
- Institutionen för växtvetenskap, Sveriges lantbruksuniversitet
Sammanfattning
Morphological similarity among E. trachycaulus, E. virescens, E. violaceus, and E. hyperarcticus has often been noted. Taxonomists have tried to discriminate among these taxa using morphological characters and a number of different relationships among them have been suggested. However, the genetic relationships among these taxa are still unknown. AFLP analysis was used to characterize the molecular diversity of these taxa and to examine genetic relationships among them. A high degree of genetic identity was apparent among 7 accessions of E. virescens. The similarity values ranged from 0.90 to 0.99 with an average of 0.94. The mean similarity values among 3 E. hyperarcticus and among 5 E. violaceus accessions were 0.84 (0.81-0.87) and 0.77 (0.66-0.90), respectively. The similarity values among 17 E. trachycaulus accessions ranged from 0.49 to 0.92 with an average of 0.75. The 5 accessions of E. subsecundus displayed high variation, with similarity values between 0.52 and 0.68 and a mean value of 0.59. Both maximum-parsimony (MP) and neighbor-oining (NJ) analyses showed that all 7 accessions of E. virescens formed a clade, indicating a monophyletic origin. On the other hand, Elymus trachycaulus, E. subsecundus, and E. violaceus were each paraphyletic and separated into different genetically distinct groups. Among these 5 taxa, E. virescens was genetically similar to E. trachycaulus, and E. violaceus was genetically similar to E. hyperarcticus.
Nyckelord
AFLP; Elymus; genetic diversity; genetic relationship
Publicerad i
Genome
2006, volym: 49, nummer: 9, sidor: 1160-1169
Utgivare: NATL RESEARCH COUNCIL CANADA-N R C RESEARCH PRESS
SLU författare
UKÄ forskningsämne
Miljö- och naturvårdsvetenskap
Landskapsarkitektur
Trädgårdsvetenskap/hortikultur
Publikationens identifierare
- DOI: https://doi.org/10.1139/G06-062
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/11205