Show simple item record

dc.contributor.authorAbraham, Saji T.
dc.contributor.authorZaya, David N.
dc.contributor.authorKoenig, Walter D.
dc.contributor.authorAshley, Mary V.
dc.date.accessioned2013-11-08T19:17:29Z
dc.date.available2013-11-08T19:17:29Z
dc.date.issued2011
dc.identifier.bibliographicCitationAbraham, S. T., D. N. Zaya, et al. (2011). "Interspecific and intraspecific pollination patterns of valley oak, quercus lobata, in a mixed stand in coastal central california." International journal of plant sciences 172(5): 691-699. DOI:10.1086/659646en_US
dc.identifier.issn1058-5893
dc.identifier.urihttp://hdl.handle.net/10027/10444
dc.descriptionThis is a copy of an article published in the International Journal of Plant Sciences © 2011 by The University of Chicago. DOI: 10.1086/659646en_US
dc.description.abstractPollination patterns within Quercus lobata and interspecific hybridization between Q. lobata and Quercus douglasii were studied in a coastal central California mixed woodland. We first identified hybrids by means of microsatellite genotyping and assignment tests. Hybrids were rare, both among adults (4 of 190, 2.1%) and among acorns collected from Q. lobata trees (6 of 392, 1.5%). These low rates of hybridization at both early and late life history stages suggest that fertility barriers, rather than natural selection against hybrids, limit hybridization between these two species. However, hybrid adults, although rare, may facilitate gene flow between the two species. Acorns collected from a hybrid tree had both Q. lobata pollen donors (11 of 30, 37%) and Q. douglasii or hybrid pollen donors (19 of 30, 63%). After removing hybrid acorns from the analysis, we used paternity assignment to track pollination patterns within Q. lobata. Of 108 acorns, only 32 (30%) were assigned to candidate pollen donors within 200 m of the maternal tree, indicating that the majority of effective pollen travels more than 200 m. Individual trees had acorn crops with many different sires and an average effective number of pollen donors (Nep) of 219 per tree. Indirect methods using correlated paternity estimated mean pollination distances of ~100 m and mean Nep of 5.2 per tree, values much lower than those derived directly from paternity assignments.en_US
dc.description.sponsorshipThis research was supported by grants from the University of California Integrated Hardwood Range Management Program and the National Science Foundation (DEB-0816691) to W. D. Koenig.en_US
dc.language.isoen_USen_US
dc.publisherThe University of Chicago Pressen_US
dc.subjecthybridizationen_US
dc.subjectmicrosatellitesen_US
dc.subjectpaternity assignmenten_US
dc.subjectinterspecific gene flowen_US
dc.titleInterspecific and Intraspecific Pollination Patterns of Valley Oak, Quercus Lobata, in a Mixed Stand in Coastal Central Californiaen_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record