Germination patterns of six herbs invading the Chinese subtropics
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.gecco.2023.e02469 http://hdl.handle.net/11449/247142 |
Resumo: | Germination is a key step driving biological invasions. We evaluated germination patterns of six herbaceous species that commonly invade natural and agricultural regions of China. Seed fresh mass, shape, and water absorption were measured, and germination was tested under alternating day/night temperature regimes and light/dark treatments. Seeds of Amaranthus hybridus were physiologically dormant, exhibiting a low germination percentage (<20 %) under all treatments. Maximum germination of all other study species ranged from 56 % to 95 % in the light-exposed treatments, but optimal temperature requirement was species specific. For instance, Bidens frondosa seeds germination rate was highest (70 %) in warm treatments (25/35 and 35/40 °C), while the rate for Dysphania ambrosioides was highest (>90 %) in cold treatments (10/20 and 20/30 °C). Germination of the small-seeded Crassocephalum crepidioides and D. ambrosioides was reliant on light exposure, with nearly null germination in the dark. Seed morpho-physical traits may influence germination patterns of invasive herbs in Chinese landscapes. Observed dormancy may be related to seed after-ripening (or cold stratification) rather than the incubation temperature regimes, as could be the case of A. hybridus. Nevertheless, for most species the temperature regimes are key drivers of germination timing, determining the season of recruitment, enabling these invasive species to avoid competition and to colonize and coexist in similar habitats worldwide. |
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Germination patterns of six herbs invading the Chinese subtropicsAnnualDormancyInvasionLightSeed traitsTemperatureGermination is a key step driving biological invasions. We evaluated germination patterns of six herbaceous species that commonly invade natural and agricultural regions of China. Seed fresh mass, shape, and water absorption were measured, and germination was tested under alternating day/night temperature regimes and light/dark treatments. Seeds of Amaranthus hybridus were physiologically dormant, exhibiting a low germination percentage (<20 %) under all treatments. Maximum germination of all other study species ranged from 56 % to 95 % in the light-exposed treatments, but optimal temperature requirement was species specific. For instance, Bidens frondosa seeds germination rate was highest (70 %) in warm treatments (25/35 and 35/40 °C), while the rate for Dysphania ambrosioides was highest (>90 %) in cold treatments (10/20 and 20/30 °C). Germination of the small-seeded Crassocephalum crepidioides and D. ambrosioides was reliant on light exposure, with nearly null germination in the dark. Seed morpho-physical traits may influence germination patterns of invasive herbs in Chinese landscapes. Observed dormancy may be related to seed after-ripening (or cold stratification) rather than the incubation temperature regimes, as could be the case of A. hybridus. Nevertheless, for most species the temperature regimes are key drivers of germination timing, determining the season of recruitment, enabling these invasive species to avoid competition and to colonize and coexist in similar habitats worldwide.Lushan Botanical Garden Chinese Academy of ScienceUniversidade Estadual Paulista (Unesp) Departamento de Biodiversidade, SPNorthern Hub Charles Darwin UniversityUniversidade Estadual Paulista (Unesp) Departamento de Biodiversidade, SPChinese Academy of ScienceUniversidade Estadual Paulista (UNESP)Charles Darwin UniversityBhatt, ArvindDaibes, L. Felipe [UNESP]Chen, XingxingGallacher, David J.2023-07-29T13:07:24Z2023-07-29T13:07:24Z2023-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.gecco.2023.e02469Global Ecology and Conservation, v. 43.2351-9894http://hdl.handle.net/11449/24714210.1016/j.gecco.2023.e024692-s2.0-85152120779Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGlobal Ecology and Conservationinfo:eu-repo/semantics/openAccess2023-07-29T13:07:24Zoai:repositorio.unesp.br:11449/247142Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:34:10.279372Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Germination patterns of six herbs invading the Chinese subtropics |
title |
Germination patterns of six herbs invading the Chinese subtropics |
spellingShingle |
Germination patterns of six herbs invading the Chinese subtropics Bhatt, Arvind Annual Dormancy Invasion Light Seed traits Temperature |
title_short |
Germination patterns of six herbs invading the Chinese subtropics |
title_full |
Germination patterns of six herbs invading the Chinese subtropics |
title_fullStr |
Germination patterns of six herbs invading the Chinese subtropics |
title_full_unstemmed |
Germination patterns of six herbs invading the Chinese subtropics |
title_sort |
Germination patterns of six herbs invading the Chinese subtropics |
author |
Bhatt, Arvind |
author_facet |
Bhatt, Arvind Daibes, L. Felipe [UNESP] Chen, Xingxing Gallacher, David J. |
author_role |
author |
author2 |
Daibes, L. Felipe [UNESP] Chen, Xingxing Gallacher, David J. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Chinese Academy of Science Universidade Estadual Paulista (UNESP) Charles Darwin University |
dc.contributor.author.fl_str_mv |
Bhatt, Arvind Daibes, L. Felipe [UNESP] Chen, Xingxing Gallacher, David J. |
dc.subject.por.fl_str_mv |
Annual Dormancy Invasion Light Seed traits Temperature |
topic |
Annual Dormancy Invasion Light Seed traits Temperature |
description |
Germination is a key step driving biological invasions. We evaluated germination patterns of six herbaceous species that commonly invade natural and agricultural regions of China. Seed fresh mass, shape, and water absorption were measured, and germination was tested under alternating day/night temperature regimes and light/dark treatments. Seeds of Amaranthus hybridus were physiologically dormant, exhibiting a low germination percentage (<20 %) under all treatments. Maximum germination of all other study species ranged from 56 % to 95 % in the light-exposed treatments, but optimal temperature requirement was species specific. For instance, Bidens frondosa seeds germination rate was highest (70 %) in warm treatments (25/35 and 35/40 °C), while the rate for Dysphania ambrosioides was highest (>90 %) in cold treatments (10/20 and 20/30 °C). Germination of the small-seeded Crassocephalum crepidioides and D. ambrosioides was reliant on light exposure, with nearly null germination in the dark. Seed morpho-physical traits may influence germination patterns of invasive herbs in Chinese landscapes. Observed dormancy may be related to seed after-ripening (or cold stratification) rather than the incubation temperature regimes, as could be the case of A. hybridus. Nevertheless, for most species the temperature regimes are key drivers of germination timing, determining the season of recruitment, enabling these invasive species to avoid competition and to colonize and coexist in similar habitats worldwide. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:07:24Z 2023-07-29T13:07:24Z 2023-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.gecco.2023.e02469 Global Ecology and Conservation, v. 43. 2351-9894 http://hdl.handle.net/11449/247142 10.1016/j.gecco.2023.e02469 2-s2.0-85152120779 |
url |
http://dx.doi.org/10.1016/j.gecco.2023.e02469 http://hdl.handle.net/11449/247142 |
identifier_str_mv |
Global Ecology and Conservation, v. 43. 2351-9894 10.1016/j.gecco.2023.e02469 2-s2.0-85152120779 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Global Ecology and Conservation |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129530786742272 |