Comparisons of within-population genetic variation in sexual and agamospermous Amelanchier (Rosaceae) using RAPD markers

Authors
Campbell, CS Alice, LA Wright, WA
Citation
Cs. Campbell et al., Comparisons of within-population genetic variation in sexual and agamospermous Amelanchier (Rosaceae) using RAPD markers, PLANT SYS E, 215(1-4), 1999, pp. 157-167
Citations number
41
Categorie Soggetti
Plant Sciences
Journal title
PLANT SYSTEMATICS AND EVOLUTION
ISSN journal
03782697 → ACNP
Volume
215
Issue
1-4
Year of publication
1999
Pages
157 - 167
Database
ISI
SICI code
0378-2697(1999)215:1-4<157:COWGVI>2.0.ZU;2-N
Abstract
We compared genetic variation of sexual Amelanchier bartramiana and faculta tively agamospermous (asexually seed-producing) A. laevis at one site where the two species are sympatric. We analyzed 77 random amplified polymorphic DNA (RAPD) markers in 29 A. bartramiana individuals and 76 RAPD markers in 31 A. laevis individuals. The two species do not differ significantly in m ean genetic variation. However, 22.4% of genetic similarity values between A. laevis individuals exceed the highest value of A. bartramiana and may re present the effect of agamospermy. Variation within A. laevis may be the re sult of sexuality, hybridization, polyploidy, and other factors.