Document Detail

The adaptive value of cued seed dispersal in desert plants: Seed retention and release in Mammillaria pectinifera (Cactaceae), a small globose cactus.
MedLine Citation:
PMID:  21628209     Owner:  NLM     Status:  In-Data-Review    
Serotiny, or delayed seed dispersal, is common in fluctuating environments because it hedges the risks of establishment. Mammillaria pectinifera (Cactaceae) facultatively expels fruits in the year they are produced or retains them to disperse the seed over several years. We tested whether M. pectinifera increased fruit expulsion as a response to increased rainfall. While no fruit expulsion was observed in 1997, a dry year, in the wetter 1998 around 20% of all fruits formed were expelled from the maternal plant. A greenhouse experiment showed that high moisture results in the plants expelling all their fruits. Because in 1998 establishment was five times higher than in 1997, this response seems to be highly adaptive: Active fruit expulsion and consequent seed release increases the probability of establishment during pulses of high precipitation.
Edward M Peters; Carlos Martorell; Exequiel Ezcurra
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of botany     Volume:  96     ISSN:  0002-9122     ISO Abbreviation:  Am. J. Bot.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2011-06-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370467     Medline TA:  Am J Bot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  537-41     Citation Subset:  -    
Dirección de Conservación de los Ecosistemas, Instituto Nacional de Ecología-SEMARNAT, Periférico Sur 5000 2° piso, Insurgentes-Cuicuilco 04510 México D.F., Mexico.
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