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Titolo:
SEED DAMAGE TOLERANCE AND SEEDLING RESPROUTING ABILITY OF PRIORIA-COPAIFERA IN PANAMA
Autore:
DALLING JW; HARMS KE; AIZPRUA R;
Indirizzi:
SMITHSONIAN TROP RES INST,APARTADO 2072 BALBOA PANAMA
Titolo Testata:
Journal of tropical ecology
, volume: 13, anno: 1997,
parte:, 4
pagine: 481 - 490
SICI:
0266-4674(1997)13:<481:SDTASR>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
ESTABLISHMENT CONDITIONS; DIPTERYX-PANAMENSIS; VIROLA-SURINAMENSIS; WOODY-PLANTS; CANOPY TREE; SIZE; PREDATION; FOREST; CONSEQUENCES; DISPERSAL;
Keywords:
EL CATIVO; PANAMA; PRIORIA COPAIFERA; RESPROUT; SEED PREDATION; SEED SIZE; SEEDLING DAMAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
J.W. Dalling et al., "SEED DAMAGE TOLERANCE AND SEEDLING RESPROUTING ABILITY OF PRIORIA-COPAIFERA IN PANAMA", Journal of tropical ecology, 13, 1997, pp. 481-490

Abstract

Germination and seedling resprouting capacity of the very large-seeded tree species Prioria copaifera Griseb. (Fabaceae) was studied in theseasonally moist forest of Barro Colorado Island, Panama. Seeds with 60% of their cotyledonary mass removed did not suffer a reduced probability of germination compared to unmanipulated seeds and seeds infested with up to eight insect larvae germinated as well as uninfested seeds. Unmanipulated seeds were able to consecutively produce up to four functional resprout shoots after excision of the initial, and subsequent, fully expanded shoots. Even seeds with up to 60% of their reserves removed showed some capacity to resprout. Less than 10% of seeds we encountered in the field 2 mo after the end of the fruiting season were in a viable stale, with the majority (55%) of mortality attributable to insect or pathogen damage. Of the 46 seeds that were viable, 30% hadsuffered partial removal of seed reserves similar to our manipulationtreatments. These results indicate that P. copaifera seeds are capable of tolerating severe seed and shoot damage. The selective advantage conferred by damage tolerance may in part have contributed to the evolution of large seed size in this species.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 15:46:41