Characterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert

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dc.contributor.authorHepp, Josefina
dc.contributor.authorGomez, Miguel
dc.contributor.authorLeon Lobos, Pedro
dc.contributor.authorMontenegro, Gloria
dc.contributor.authorVilalobos, Luis
dc.contributor.authorContreras, Samuel
dc.date.accessioned2024-01-10T12:11:09Z
dc.date.available2024-01-10T12:11:09Z
dc.date.issued2021
dc.description.abstractThe genus Nolana (Solanaceae) comprises numerous species endemic to the coastal Atacama Desert of Chile and Peru of high ornamental potential and conservation value. The environments in which these species have evolved and are present today correspond to particular conditions in the midst of a hyper-arid habitat, so the study of their germination requirements and characterisation of seed dormancy becomes important in terms of conservation but also for ecological and evolutionary purposes. Different treatments were performed on mericarps of 12 species of Nolana: control (intact seeds imbibed in distilled water), scarification in funicular plug and distilled water and scarification in funicular plug and addition of GA(3) (500 ppm); their permeability to water was also tested. It was determined that the species did not present physical dormancy, as had been previously reported, but rather physiological dormancy (PD). Germination results after treatments were not homogeneous among all 12 species, indicating differences in their dormancy levels. Also, the important role of the endosperm in the prevention of germination for the studied Nolana species was highlighted. Regarding the relationship between the level of PD (expressed as the percentage of germination for the most successful treatment) and the latitudinal distribution of the species or their phylogenetic closeness, it was determined that, for the studied species, their proximity in terms of clades was more relevant than their latitudinal distribution.
dc.description.funderNational Forest Commission (CONAF Pan de Azucar, CONAF Llanos de Challe)
dc.description.funderAgricultural Research Institute (INIA)
dc.description.funderCONICYT Scholarship
dc.fechaingreso.objetodigital2024-04-25
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1017/S0960258520000434
dc.identifier.eissn1475-2735
dc.identifier.issn0960-2585
dc.identifier.urihttps://doi.org/10.1017/S0960258520000434
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76634
dc.identifier.wosidWOS:000647475800002
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Hepp Castillo, Josefina; S/I; 125716
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final29
dc.pagina.inicio20
dc.publisherCAMBRIDGE UNIV PRESS
dc.revistaSEED SCIENCE RESEARCH
dc.rightsacceso restringido
dc.subjectendosperm
dc.subjectfunicular plug
dc.subjectgermination
dc.subjectlomas vegetation
dc.subjectmericarp
dc.subjectphysiological dormancy
dc.subjectGERMINATION
dc.subjectPHYLOGENY
dc.subjectDIVERSITY
dc.subjectTARAPACA
dc.subjectSOUTH
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleCharacterisation of seed dormancy of 12 Chilean species of Nolana (Solanaceae) from the coastal Atacama Desert
dc.typeartículo
dc.volumen31
sipa.codpersvinculados125716
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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