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    Author(s): Constance I. Millar
    Date: 1977
    Source: University of Washington. B.S. thesis.
    Publication Series: Theses
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (8.0 MB)

    Description

    In sexually reproducing plant species, the prevailing breeding system is of enormous importance in determining the patterns of group variation and subsequent race and species formation. The breeding system regulates the limits of the breeding population and the extent to which hybridization occurs. The breeding system in a species is governed by certain reproductive isolating mechanisms, which may be effective at many levels.

    One level at which isolation is operative is the interaction of pistil and pollen. In this case, pollen may be preferentially inhibited from germinating or growing in the pistil of a particular type. This phenomenon has long been studied in the widely occurring case of self-incompatibility.

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    Citation

    Millar, Constance I. 1977. Pollen-pistil interactions: Four alder species after selfing and crossing. Seattle, WA: University of Washington. 92 p. B.S. thesis.

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