Evol Ecol Res 11: 1031-1051 (2009)     Full PDF if your library subscribes.

Post-pollination processes and non-random mating among compatible mates

Lauren G. Ruane

Department of Organismic and Evolutionary Biology, Harvard University Herbaria, Cambridge, Massachusetts, USA

Correspondence: L.G. Ruane, Department of Biology, Chemistry and Environmental Science, Christopher Newport University, 1 University Place, Newport News, VA 23606, USA.
e-mail: lauren.ruane@cnu.edu


Questions: What factors determine the degree of non-random mating that occurs among compatible donors following pollination? Do species with longer styles exhibit greater inequalities in seed siring success among pollen donors? Does increased gametophytic competition (i.e. higher ratio of pollen load size to ovule number) lead to greater inequality in seed siring success among pollen donors? Are particular life-history traits (i.e. animal- vs. wind-pollinated species or wild vs. cultivated species) associated with greater inequality in seed siring among pollen donors?

Data incorporated: I summarize the results of 51 studies that assessed the paternity of seeds produced following experimental pollinations in which pollen grains from two or more compatible donors competed for ovule fertilization.

Method of analysis: Data from multiple studies were combined to determine the effects of style length, ratio of pollen load size to ovule number, and life-history traits on the degree of non-random mating among compatible mates.

Conclusions: Style length had the strongest association with non-random mating. Surprisingly, species with shorter styles exhibited a significantly greater inequality in seed siring success among pollen donors. The degree of non-random mating due to post-pollination processes was not affected by the intensity of gametophytic competition or by life-history traits.  

Keywords: gametophytic competition, pollen siring success, post-pollination performance, ratio of pollen load size to ovule number, style length.

IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.


        © 2009 Lauren G. Ruane. All EER articles are copyrighted by their authors. All authors endorse, permit and license Evolutionary Ecology Ltd. to grant its subscribing institutions/libraries the copying privileges specified below without additional consideration or payment to them or to Evolutionary Ecology, Ltd. These endorsements, in writing, are on file in the office of Evolutionary Ecology, Ltd. Consult authors for permission to use any portion of their work in derivative works, compilations or to distribute their work in any commercial manner.

       Subscribing institutions/libraries may grant individuals the privilege of making a single copy of an EER article for non-commercial educational or non-commercial research purposes. Subscribing institutions/libraries may also use articles for non-commercial educational purposes by making any number of copies for course packs or course reserve collections. Subscribing institutions/libraries may also loan single copies of articles to non-commercial libraries for educational purposes.

       All copies of abstracts and articles must preserve their copyright notice without modification.