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Abstract Detail


Population Genetics

Mashayekhi, Saeideh [1], Columbus, J. travis [2].

Genetic Diversity of Allium munzii (Amaryllidaceae), a Rare Species.

Allium munzii is endemic to vernally moist clay soil habitats in western Riverside County, California, USA, where it is known from eight regions and 18 extant element occurrences. This species is regarded as seriously endangered by the California Native Plant Society (List 1B.1). Allium munzii was formally listed as threatened by the state of California in 1990 and as endangered by the U.S. Fish and Wildlife Service in 1998.We examined within and among population genetic diversity using two variable chloroplast markers (rpL32trnL intergenic spacer region and rpoC1 intron). Of the total genetic variation detected in A. munzii, 87% was due to differences among occurrences within regions. The highest level of both genetic and haplotype diversity was detected within the Harford Springs County Park occurrence. These data suggest that most of the element occurrences are strongly genetically differentiated and there are low levels of gene flow between occurrences, possibly resulting from habitat fragmentation. Ex situ seed and bulb conservation is recommended to enable introduction of individuals to occurrences with low abundance and genetic diversity.

Broader Impacts:


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1 - Rancho Santa Ana Botanic Garden, 1500 N. College Ave., Claremont, CA, 91711-3157, USA
2 - Rancho Santa Ana Botanic Garden, 1500 North College Avenue, Claremont, CA, 91711-3157, USA

Keywords:
Allium munzii
Amaryllidaceae
genetic diversity
chloroplast loci.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Battelle South/Convention Center
Date: Monday, July 9th, 2012
Time: 5:30 PM
Number: PPG006
Abstract ID:661


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