Experimental studies of pollen carryover: Hummingbirds and Ipomopsis aggregata View Full Text


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Article Info

DATE

1982-09

AUTHORS

Mary V. Price, Nickolas M. Waser

ABSTRACT

We present results of experiments designed to identify floral characteristics that influence patterns of pollen carryover by hummingbirds visiting Ipomopsis aggregata flowers. We used fluorescent dye powders as pollen analogues. For all four experimental treatments considered, amounts of dye deposited on recipient stigmas declined linearly as a function of flower position in a visitation sequence. The decline was significantly steeper when recipient flowers had pollen-carrying anthers than when they did not; whereas degree of stigma clogging and presence or absence of empty anthers did not influence carryover. From this we conclude that presence of pollen on recipient flowers significantly reduces the average number of subsequent flowers reached by donor pollen. We discuss mechanisms for this effect and its significance for the evolution of floral structure. More... »

PAGES

353-358

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00380004

DOI

http://dx.doi.org/10.1007/bf00380004

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1044144148

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/28309959


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