Morphology, ecophysiology and germination of seeds of the Neotropical tree Alibertia patinoi (Rubiaceae)
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad de Costa Rica
2013
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876440480703578112 |
|---|---|
| author | Diego Fernando Escobar Escobar |
| author_facet | Diego Fernando Escobar Escobar |
| contents | Morphology, ecophysiology and germination of seeds of the Neotropical tree Alibertia patinoi (Rubiaceae) Diego Fernando Escobar Escobar Alba Marina Torres G. Biología far non red light dormant seeds Climax species Alibertia patinoi (Rubiaceae) is of economic and cultural importance for communities in the Colombian Pacific and Amazon regions, where it is cultivated and mature fruits are highly appreciated and con- sumed. Since there is a lack of knowledge of the seed physiology of this species, we describe here the germina- tion behavior and morphometry of seeds of Alibertia patinoi, and relate them to its habitat. Fruits were collected from a mixed food crop and a commercial plantation in Guaimía village, Buenaventura, Colombia, a tropical rain forest area. We measured length, width, thickness, mass (n=1 400), and moisture content of seeds (n=252). Primary dormancy tests were conducted (n=200), followed by imbibition (n=252) and germination dynamics, under different conditions of light and temperature specific to understory and forest clearings (n=300 seeds). Finally, seed storage behavior was established (n=100 seeds). We observed that size and mass of seeds had a narrow range of values that did not differ within or among fruits and that the species did not exhibit primary dormancy. The seeds are recalcitrant, and recently harvested seeds exhibited higher seed moisture content (ca. 44%) and continuous metabolism. The seed germination percentage was observed to be higher under the specific dense canopy forest light and temperature conditions; furthermore, neither enriched far-red light nor darkness conditions inhibited germination. We concluded that rapid germination could be the establishment strategy of this species. Also, the physiological traits (i.e., rapid germination rate, low germination requirements, absence of primary dormancy, and recalcitrant behavior) and seed size and mass, suggest that A. patinoi is adapted to conditions of mature tropical rain forests. Rev. Biol. Trop. 61 (2): 547-556. Epub 2013 June 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44927436007 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.61 |
| format | Artículo científico |
| id | redalyc_44927436007 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Morphology, ecophysiology and germination of seeds of the Neotropical tree Alibertia patinoi (Rubiaceae) Diego Fernando Escobar Escobar Biología far non red light dormant seeds Climax species Morphology, ecophysiology and germination of seeds of the Neotropical tree Alibertia patinoi (Rubiaceae) Diego Fernando Escobar Escobar Alba Marina Torres G. Biología far non red light dormant seeds Climax species Alibertia patinoi (Rubiaceae) is of economic and cultural importance for communities in the Colombian Pacific and Amazon regions, where it is cultivated and mature fruits are highly appreciated and con- sumed. Since there is a lack of knowledge of the seed physiology of this species, we describe here the germina- tion behavior and morphometry of seeds of Alibertia patinoi, and relate them to its habitat. Fruits were collected from a mixed food crop and a commercial plantation in Guaimía village, Buenaventura, Colombia, a tropical rain forest area. We measured length, width, thickness, mass (n=1 400), and moisture content of seeds (n=252). Primary dormancy tests were conducted (n=200), followed by imbibition (n=252) and germination dynamics, under different conditions of light and temperature specific to understory and forest clearings (n=300 seeds). Finally, seed storage behavior was established (n=100 seeds). We observed that size and mass of seeds had a narrow range of values that did not differ within or among fruits and that the species did not exhibit primary dormancy. The seeds are recalcitrant, and recently harvested seeds exhibited higher seed moisture content (ca. 44%) and continuous metabolism. The seed germination percentage was observed to be higher under the specific dense canopy forest light and temperature conditions; furthermore, neither enriched far-red light nor darkness conditions inhibited germination. We concluded that rapid germination could be the establishment strategy of this species. Also, the physiological traits (i.e., rapid germination rate, low germination requirements, absence of primary dormancy, and recalcitrant behavior) and seed size and mass, suggest that A. patinoi is adapted to conditions of mature tropical rain forests. Rev. Biol. Trop. 61 (2): 547-556. Epub 2013 June 01. 2013 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44927436007 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.61 |
| title | Morphology, ecophysiology and germination of seeds of the Neotropical tree Alibertia patinoi (Rubiaceae) |
| topic | Biología far non red light dormant seeds Climax species |
| url | https://www.redalyc.org/articulo.oa?id=44927436007 |