EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.]
Seed hydration is considered the most important external factor interfering on germination. This study evaluated the tolerance of Gliricidia sepium (Jacq.) Steud seeds to water and salt stresses during germination. Seed germination was observed in four 100-seed replications, in polyethylene glycol (...
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| Format: | Article |
| Language: | English |
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Universidade Federal Rural do Semi-Árido
2009-01-01
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| Series: | Revista Caatinga |
| Online Access: | http://www.redalyc.org/articulo.oa?id=237117843024 |
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| author | SÉFORA GIL GOMES DE FARIAS ANTONIO LUCINEUDO DE OLIVEIRA FREIRE DIÉRCULES RODRIGUES DOS SANTOS IVONETE ALVES BAKKE ROMÁRIO BEZERRA E SILVA |
| author_facet | SÉFORA GIL GOMES DE FARIAS ANTONIO LUCINEUDO DE OLIVEIRA FREIRE DIÉRCULES RODRIGUES DOS SANTOS IVONETE ALVES BAKKE ROMÁRIO BEZERRA E SILVA |
| author_sort | SÉFORA GIL GOMES DE FARIAS |
| collection | DOAJ |
| description | Seed hydration is considered the most important external factor interfering on germination. This study evaluated the tolerance of Gliricidia sepium (Jacq.) Steud seeds to water and salt stresses during germination. Seed germination was observed in four 100-seed replications, in polyethylene glycol (PEG-6000) or sodium chloride (NaCl) solutions with four osmotic potentials levels (0; -0.5; -1.0 and -2.0 MPa), arranged according to a completely random design, simulating water and salt stresses, respectively, using four replications of 100 seeds. The germination percentage and germination velocity index were estimated. Percentage germination of the control seeds averaged 94%, and reduced to 77.6% and 44.3% in -1.0 MPa NaCl and PEG solutions, respectively. No germination was observed in -2.0 MPa. Germination velocity index showed the same trend. Gliricidia sepium seeds showed less tolerance to water than to salt stress, and in this condition they are not tolerate to osmotic stress up to -0,5 MPa. |
| first_indexed | 2024-04-12T04:45:11Z |
| format | Article |
| id | doaj.art-db7c02481dbb47fea6f539f556a7b8b7 |
| institution | Directory Open Access Journal |
| issn | 0100-316X 1983-2125 |
| language | English |
| last_indexed | 2024-04-12T04:45:11Z |
| publishDate | 2009-01-01 |
| publisher | Universidade Federal Rural do Semi-Árido |
| record_format | Article |
| series | Revista Caatinga |
| spelling | doaj.art-db7c02481dbb47fea6f539f556a7b8b72022-12-22T03:47:32ZengUniversidade Federal Rural do Semi-ÁridoRevista Caatinga0100-316X1983-21252009-01-01224152157EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.]SÉFORA GIL GOMES DE FARIASANTONIO LUCINEUDO DE OLIVEIRA FREIREDIÉRCULES RODRIGUES DOS SANTOSIVONETE ALVES BAKKEROMÁRIO BEZERRA E SILVASeed hydration is considered the most important external factor interfering on germination. This study evaluated the tolerance of Gliricidia sepium (Jacq.) Steud seeds to water and salt stresses during germination. Seed germination was observed in four 100-seed replications, in polyethylene glycol (PEG-6000) or sodium chloride (NaCl) solutions with four osmotic potentials levels (0; -0.5; -1.0 and -2.0 MPa), arranged according to a completely random design, simulating water and salt stresses, respectively, using four replications of 100 seeds. The germination percentage and germination velocity index were estimated. Percentage germination of the control seeds averaged 94%, and reduced to 77.6% and 44.3% in -1.0 MPa NaCl and PEG solutions, respectively. No germination was observed in -2.0 MPa. Germination velocity index showed the same trend. Gliricidia sepium seeds showed less tolerance to water than to salt stress, and in this condition they are not tolerate to osmotic stress up to -0,5 MPa.http://www.redalyc.org/articulo.oa?id=237117843024 |
| spellingShingle | SÉFORA GIL GOMES DE FARIAS ANTONIO LUCINEUDO DE OLIVEIRA FREIRE DIÉRCULES RODRIGUES DOS SANTOS IVONETE ALVES BAKKE ROMÁRIO BEZERRA E SILVA EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] Revista Caatinga |
| title | EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] |
| title_full | EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] |
| title_fullStr | EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] |
| title_full_unstemmed | EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] |
| title_short | EFEITOS DOS ESTRESSES HÍDRICO E SALINO NA GERMINAÇÃO DE SEMENTES DE GLIRICIDIA [Gliricidia sepium (JACQ.) STEUD.] |
| title_sort | efeitos dos estresses hidrico e salino na germinacao de sementes de gliricidia gliricidia sepium jacq steud |
| url | http://www.redalyc.org/articulo.oa?id=237117843024 |
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