Growth regulators and water stress in canafistula seed germination
| Autor: | Sonia Cristina Juliano Gualtieri de Andrade Perez, Beatriz Amoroso Botelho |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: |
Agriculture (General)
PEG6000 Tolerance limit S1-972 PEG 6000 chemistry.chemical_compound Botany spermidine Peltophorum dubium putrescine gibberelin lcsh:Agriculture (General) putrescina biology Water stress espermidina biology.organism_classification lcsh:S1-972 Spermidine chemistry Germination Putrescine Animal Science and Zoology Gibberellin Agronomy and Crop Science Tree species giberelina |
| Zdroj: | Scientia Agricola, Vol 58, Iss 1, Pp 43-49 (2001) Scientia Agricola, Volume: 58, Issue: 1, Pages: 43-49, Published: MAR 2001 Scientia Agricola v.58 n.1 2001 Scientia Agrícola Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 0103-9016 |
| Popis: | Sementes selecionadas escarificadas de canafístula foram submetidas a estresses hídricos simulados, sob 27°C, com ou sem a adição de poliaminas e giberelina. Os valores de porcentagem e velocidade de germinação obtidos com os testes realizados indicaram que as sementes são resistentes ao estresse hídrico, e a adição de putrescina e espermidina nas concentrações de 5 e 10mM aumenta a performance sob estresse hídrico. O uso de giberelina permite a ampliação do limite máximo de tolerância ao estresse hídrico. Scarified selected seeds of the wood tree species 'canafístula' were submitted to water stress at 27ºC, with and without addition of putrescine and spermidine at concentrations of 5 and 10mM and gibberellin 0.1mM. The values of rate and germination percentage of all the experiments indicated that the seeds are resistant to water stress. When putrescine and spermidine were added to the germination media the performance under stress increased significantly. Gibberellin extended the maximal tolerance limit to water stress. |
| Databáze: | OpenAIRE |
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