Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
American Journal of Botany 89(11): 17921798. 2002. LIMITED HYBRIDIZATION BETWEEN QUERCUS LOBATA
 

Summary: 1792
American Journal of Botany 89(11): 17921798. 2002.
LIMITED HYBRIDIZATION BETWEEN QUERCUS LOBATA
AND QUERCUS DOUGLASII (FAGACEAE) IN A MIXED
STAND IN CENTRAL COASTAL CALIFORNIA1
KATHLEEN J. CRAFT,2
MARY V. ASHLEY,2,4
AND WALTER D. KOENIG3
2
Department of Biological Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607 USA; and
3
Hastings Natural History Reservation, University of California, Berkeley, 38601 E. Carmel Valley Road,
Carmel Valley, California 93924 USA
Many oak species are interfertile, and morphological and genetic evidence for hybridization is widespread. Here we use DNA
microsatellite markers to characterize hybridization between two closely related oak species in a mixed stand in central coastal
California, Quercus lobata (valley oak) and Q. douglasii (blue oak) (Fagaceae). Genotypes from four microsatellite loci indicate that
many alleles are shared between the two species. However, each species harbors unique alleles, and allele frequencies differ signifi-
cantly. A Bayesian analysis of genetic structure in the stand identified two highly differentiated genetic clusters, essentially corre-
sponding to species assignment based on morphology. Data from the four loci were sufficient to assign all 135 trees to one of the two
species. In addition, five putative hybrid individuals having intermediate morphologies could be assigned genetically to one or the

  

Source: Ashley, Mary V. - Department of Biological Sciences, University of Illinois at Chicago

 

Collections: Biology and Medicine; Environmental Sciences and Ecology