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Aerodynamics of Wind Pollination in Simmondsia chinensis (Link) Schneider

1985; Wiley; Volume: 72; Issue: 4 Linguagem: Inglês

10.2307/2443585

1537-2197

Karl J. Niklas, Stephen L. Buchmann,

Lubricants and Their Additives

American Journal of BotanyVolume 72, Issue 4 p. 530-539 Article AERODYNAMICS OF WIND POLLINATION IN SIMMONDSIA CHINENSIS (LINK) SCHNEIDER Karl J. Niklas, Karl J. Niklas Section of Plant Biology, Cornell University, Ithaca, New York, 14853 USDA-ARS, Carl Hayden Bee Research Center, 200 East Allen Road, Tucson, Arizona, 85719Search for more papers by this authorStephen L. Buchmann, Stephen L. Buchmann Section of Plant Biology, Cornell University, Ithaca, New York, 14853 USDA-ARS, Carl Hayden Bee Research Center, 200 East Allen Road, Tucson, Arizona, 85719Search for more papers by this author Karl J. Niklas, Karl J. Niklas Section of Plant Biology, Cornell University, Ithaca, New York, 14853 USDA-ARS, Carl Hayden Bee Research Center, 200 East Allen Road, Tucson, Arizona, 85719Search for more papers by this authorStephen L. Buchmann, Stephen L. Buchmann Section of Plant Biology, Cornell University, Ithaca, New York, 14853 USDA-ARS, Carl Hayden Bee Research Center, 200 East Allen Road, Tucson, Arizona, 85719Search for more papers by this author First published: 01 April 1985 https://doi.org/10.1002/j.1537-2197.1985.tb08306.xCitations: 14AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Wind tunnel analyses of Simmondsia chinensis (Link) Schneider or "jojoba" were conducted to quantify the behavior of airborne pollen grains around individual branches and leaves and near individual carpellate flowers. Field data (wind velocity) were used to ensure a correspondence between wind tunnel and natural conditions. Based upon the visualization of individual pollen grain trajectories, it is concluded that pollen deposition on stigmatic surfaces is influenced by large-scale aerodynamic patterns, generated by foliage leaves, and small-scale airflow patterns, formed around and by floral parts and stigmas. Leaves are seen to deflect airborne pollen grains into trajectories that can intersect ambient airflow at 90° angles, showering decumbent carpellate flowers with pollen. Similarly, flowers can deflect pollen upward and downwind, toward other flowers. The extent of floral bract and sepal recurvature is shown to influence the extent of pollen deposition by determining the characteristic airflow pattern around stigmas. Available evidence concerning the relatively recent evolutionary transition to anemophily in Simmondsia is interpreted within the context of morphological adaptations and exaptations favoring wind pollination. Citing Literature Volume72, Issue4April 1985Pages 530-539 RelatedInformation