Seed dormancy release of Halenia elliptica in response to stratification temperature, duration and soil moisture content.
BMC Plant Biol
; 20(1): 352, 2020 Jul 28.
Article
em En
| MEDLINE
| ID: mdl-32723291
ABSTRACT
BACKGROUND:
Although the effect of cold stratification on seed dormancy release has been extensively studied for many species, knowledge of the role of stratifying temperature, soil moisture content and duration of stratification on seed dormancy release at the population level is limited. Here, we aimed to determine the response of seed dormancy release to these factors in six populations of Halenia elliptica.RESULTS:
Seed dormancy release was more responsive to low than high temperatures, and no dormancy break occurred at 8 °C. Seed germination percentage increased first and then remained unchanged as stratifying soil moisture content increased from 0 to 24%. Seed dormancy release of populations from low altitude was more sensitive to increased stratifying temperature and decreased soil moisture content than those from high altitudes.CONCLUSIONS:
Temperature and soil moisture changes resulting from global warming could affect seed dormancy release and consequently seedling establishment. Thus, incorporating data on seed dormancy release involving temperature, soil moisture content and stratification duration is beneficial for predicting plant species regeneration, migration and coexistence in a scenario of climate change.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Solo
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Gentianaceae
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Dormência de Plantas
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
BMC Plant Biol
Assunto da revista:
BOTANICA
Ano de publicação:
2020
Tipo de documento:
Article