Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile

Adesmia bijuga Phil. is an endemic shrub in central Chile, classified as a critically endangered species of plant. After more than 100 years since its original description by R. A. Philippi (1884), the species was rediscovered exclusively in two locations of the Maule Region. One of them, Fundo San...

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Autores principales:	GÓMEZ P,PERSY, LILLO,DIANA, GONZÁLEZ,ALEJANDRA V
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2012
Materias:	Critically endangered species Adesmia bijuga pollination breeding system visitation rate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200008
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spelling	oai:scielo:S0717-664320120002000082014-03-10Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central ChileGÓMEZ P,PERSYLILLO,DIANAGONZÁLEZ,ALEJANDRA V Critically endangered species Adesmia bijuga pollination breeding system visitation rate Adesmia bijuga Phil. is an endemic shrub in central Chile, classified as a critically endangered species of plant. After more than 100 years since its original description by R. A. Philippi (1884), the species was rediscovered exclusively in two locations of the Maule Region. One of them, Fundo San Pedro-Las Cañas, is close to extinction with a low number of shrubs, occurring in a disturbed habitat due to plantations of Pinus radiata. This study examined the pollination biology and breeding system of A. bijuga in order to explain their small number of shrubs. We estimated composition of pollinator species attracted to flowers and visitation rates. In order to describe its breeding system in A. bijuga we used manipulated treatments to estimate autonomous self-pollination, level of reproductive assurance and pollen limitation. The results of this study indicate that only pollinators from the order Hymenoptera visit A. bijuga. The pollinator assemblage did not show temporary variation during the flowering season, with Bombus dahlbomii as its most frequent visitor. A. bijuga showed a mixed mating system that involves both cross- and self- pollination. The fruit set ranges from 20% to 60% in the absence or presence of pollinators, respectively. This selfing ability would provide reproductive assurance when pollinators fail. The taxon showed ability of asexual formation of seeds without the occurrence of fertilization by agamospermy. Supplemental outcross pollen did not increase female reproductive success, suggesting that the species is not pollen limited. All these factors may help to explain how this species has been able to survive over time in a small and isolated population. Finally, this work discusses how the results of our study can be applied to future A. bijuga conservation measures.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana. Botánica v.69 n.2 20122012-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200008en10.4067/S0717-66432012000200008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Critically endangered species Adesmia bijuga pollination breeding system visitation rate
spellingShingle	Critically endangered species Adesmia bijuga pollination breeding system visitation rate GÓMEZ P,PERSY LILLO,DIANA GONZÁLEZ,ALEJANDRA V Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
description	Adesmia bijuga Phil. is an endemic shrub in central Chile, classified as a critically endangered species of plant. After more than 100 years since its original description by R. A. Philippi (1884), the species was rediscovered exclusively in two locations of the Maule Region. One of them, Fundo San Pedro-Las Cañas, is close to extinction with a low number of shrubs, occurring in a disturbed habitat due to plantations of Pinus radiata. This study examined the pollination biology and breeding system of A. bijuga in order to explain their small number of shrubs. We estimated composition of pollinator species attracted to flowers and visitation rates. In order to describe its breeding system in A. bijuga we used manipulated treatments to estimate autonomous self-pollination, level of reproductive assurance and pollen limitation. The results of this study indicate that only pollinators from the order Hymenoptera visit A. bijuga. The pollinator assemblage did not show temporary variation during the flowering season, with Bombus dahlbomii as its most frequent visitor. A. bijuga showed a mixed mating system that involves both cross- and self- pollination. The fruit set ranges from 20% to 60% in the absence or presence of pollinators, respectively. This selfing ability would provide reproductive assurance when pollinators fail. The taxon showed ability of asexual formation of seeds without the occurrence of fertilization by agamospermy. Supplemental outcross pollen did not increase female reproductive success, suggesting that the species is not pollen limited. All these factors may help to explain how this species has been able to survive over time in a small and isolated population. Finally, this work discusses how the results of our study can be applied to future A. bijuga conservation measures.
author	GÓMEZ P,PERSY LILLO,DIANA GONZÁLEZ,ALEJANDRA V
author_facet	GÓMEZ P,PERSY LILLO,DIANA GONZÁLEZ,ALEJANDRA V
author_sort	GÓMEZ P,PERSY
title	Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
title_short	Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
title_full	Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
title_fullStr	Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
title_full_unstemmed	Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile
title_sort	pollination and breeding system in adesmia bijuga phil. (fabaceae), a critically endangered species in central chile
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200008
work_keys_str_mv	AT gomezppersy pollinationandbreedingsysteminadesmiabijugaphilfabaceaeacriticallyendangeredspeciesincentralchile AT lillodiana pollinationandbreedingsysteminadesmiabijugaphilfabaceaeacriticallyendangeredspeciesincentralchile AT gonzalezalejandrav pollinationandbreedingsysteminadesmiabijugaphilfabaceaeacriticallyendangeredspeciesincentralchile
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Pollination and breeding system in Adesmia bijuga Phil. (Fabaceae), a critically endangered species in Central Chile

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