Document Detail

Predicting the pathway to wind pollination: heritabilities and genetic correlations of inflorescence traits associated with wind pollination in Schiedea salicaria (Caryophyllaceae).
MedLine Citation:
PMID:  16599909     Owner:  NLM     Status:  MEDLINE    
The transition from biotic to abiotic pollination was investigated using Schiedea, a genus exhibiting a remarkable diversity of inflorescence architecture associated with pollination biology. Heritabilities and genetic correlations of inflorescence traits were estimated in gynodioecious Schiedea salicaria (Caryophyllaceae), a species that has likely undergone a recent transition to wind-pollination. Using a partial diallel crossing design, significant narrow-sense heritabilities were detected for inflorescence condensation (h2 = 0.56 to 0.68 in the two sexes) and other traits related to the extent of wind pollination in Schiedea species. Heritabilities were generally higher in hermaphrodites than in females. Strong genetic correlations may constrain the evolution of some inflorescence traits that facilitate wind pollination, such as simultaneous shortening of inflorescence length and elongation of the subtending internode. The presence of significant narrow-sense heritabilities for traits associated with wind pollination suggests, however, that selection for more effective wind pollination in the windy, pollinator-limited environments where S. salicaria grows could lead to the evolution of the highly condensed inflorescences characteristic of other wind-pollinated species of Schiedea.
S G Weller; A K Sakai; T M Culley; D R Campbell; A K Dunbar-Wallis
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of evolutionary biology     Volume:  19     ISSN:  1010-061X     ISO Abbreviation:  J. Evol. Biol.     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-04-07     Completed Date:  2006-06-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8809954     Medline TA:  J Evol Biol     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  331-42     Citation Subset:  IM    
Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, USA.
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MeSH Terms
Caryophyllaceae / genetics,  physiology*
Flowers / genetics*
Genetic Variation
Pollen / physiology*

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