Data/hora: 09/06/2024 14:58:59

Provedor de dados: | Planta Daninha
País: | Brazil
Título: | Seed bank modelling of volunteer oil seed rape: from seeds fate in the soil to seedling emergence
Autores: | Soltani,E.; Soltani,A.; Galeshi,S.; Ghaderi-Far,F.; Zeinali,E.
Data: | 2013-06-01
Ano: | 2013
Palavras-chave: | Life cycle; Seed survival; Dormancy cycle; Hydrothermal time model; Burial depth.
Resumo: | Studies were conducted to estimate parameters and relationships associated with sub-processes in soil seed banks of oilseed rape in Gorgan, Iran. After one month of burial, seed viability decreased to 39%, with a slope of 2.03% per day, and subsequently decreased with a lower slope of 0.01 until 365 days following burial in the soil. Germinability remained at its highest value in autumn and winter and decreased from spring to the last month of summer. Non-dormant seeds of volunteer oilseed rape did not germinate at temperatures lower than 3.8 ºC and a water potential of -1.4 MPa ºd. The hydrothermal values were 36.2 and 42.9 MPa ºd for sub- and supra-optimal temperatures, respectively. Quantification of seed emergence as influenced by burial depth was performed satisfactorily (R² = 0.98 and RMSE = 5.03). The parameters and relationships estimated here can be used for modelling soil seed bank dynamics or establishing a new model for the environment.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200004
Editor: | Sociedade Brasileira da Ciência das Plantas Daninhas
Relação: | 10.1590/S0100-83582013000200004
Formato: | text/html
Fonte: | Planta Daninha  v.31 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess