evolution

Siring success of dichogamous plants

Thursday, September 4, 2003

Description: These data are the average siring-success estimates for dichogamous and adichogamous Chamerion angustifolium. Siring success is estimated from the proportion of heterozygous progeny produced at the PGI locus. Dichogamy classes were homozygous for alternate PGI alleles, so that heterozygous progeny represent interclass pollen transfer. Format: Array: The array identification number. DichogamyType: The dichogamy status of the plants in the array. FlowerSize: The number of open flowers on each plant in the array.

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Pollen removal after single bee visits in the field

Wednesday, September 3, 2003

These data are pollen counts from anthers before and after single bee visits in populations of Chamerion angustifolium from Montana. Pollen was quantified with a Beckman-Coulter Multisizer 3 particle counter. Format: Population: The population sampled, either tetraploid or diploid. Sample: An identification code representing the plant and flower sampled. StigmaPresence: Some flowers had their stigma and style removed with forceps. Others were left intact. Visitation: Whether the anther was sampled before or after a single bee visit.

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Floral Integration

Friday, July 11, 2003

Unrelated to my “official” thesis work, I have been thinking about floral form and its influence on plant fitness. As an excuse to start a discussion with anyone interested, I’ve posted this overview of what I hope to work on next. Plant mating systems control the transmission of genes between generations and, therefore, are a fundamental characteristic of populations. Since flowers are the reproductive organs of plants, floral form fundamentally influences plant mating systems.

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Society for the Study of Evolution meetings 2003

Tuesday, June 3, 2003

Routley, M.B. & B.C. Husband. Responses to selection on protandry in Chamerion angustifolium (Onagraceae). Chico, California Download