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Abstract Detail

Pollination Biology

Ahee, Jordan [1], Dorken, Marcel [1], Van Drunen, Wendy [1].

Evidence of restricted pollen dispersal in Typha latifolia.

In the Great Lakes region of North America the abundance of native Broadleaf Cattail (Typha latifolia) appears to be decreasing via hybridization with non-native T. angustifolia. Pure stands of T. latifolia now occur at low frequencies in Southern Ontario. Wind-pollination is often assumed to promote long distance pollen dispersal, which would promote hybridization between native and non-native cattails. We investigated the spatial dynamics of pollination in T. latifolia by evaluating spatial correlations in pollen and seed production. Surprisingly, we detected significant spatial cross-correlations between pollen and seed production only at distances of less than 1 m. We then applied a range of pollen dispersal functions to the data to assess the shape of the pollen dispersal curve in T. latifolia. This analysis revealed that pollen dispersal declines sharply up to 5 m from source plants following a thin-tailed distribution. These findings suggest that even though T. latifolia produces copious amounts of pollen, the effective dispersal of it is highly localized. Moreover, although T. latifolia is self compatible and has been described as largely selfing, our results suggest that there is substantial pollen transfer between nearby inflorescences.

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Related Links:
Dorken Lab Website

1 - Trent University, Biology, 1600 West Bank Drive, Peterborough, ON, K9J 7B8, Canada

none specified

Presentation Type: Poster:Posters for Topics
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PPL012
Abstract ID:930
Candidate for Awards:None

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