Ecophysiology of Germination of Parkia platycephala Benth. Seeds
ABSTRACT Water is considered the most important environmental resource for the germination process. This study aimed to evaluate the germination performance of Parkia platycephala seeds under different conditions of water and saline stress. Seed germination was tested with solutions of poly (ethylene glycol) 6000 and sodium chloride (NaCl) at seven osmotic potentials [0.0, -0.2, -0.4, -0.6, -0.8, -1.0, and -1.2MPa (megapascal)] and four replicates with 25 seeds in a completely randomized design, simulating the water and saline stress levels, respectively. The following seedling variables were evaluated: germination percentage, germination speed index, length, and dry mass. Results showed significant interaction between the agent and the osmotic potential for all evaluated variables. P. platycephala seeds presented higher tolerance to saline stress simulated by NaCl than to water stress, showing germination performance appropriate for glycophyte plants.
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Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro
2019
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oai:scielo:S2179-808720190001001352019-03-11Ecophysiology of Germination of Parkia platycephala Benth. SeedsSantos,Luana Martins dosFarias,Séfora Gil Gomes deSilva,Romário Bezerra eDias,Bruna Anair SoutoSilva,Leovandes Soares da forest seeds salinity osmotic potential ABSTRACT Water is considered the most important environmental resource for the germination process. This study aimed to evaluate the germination performance of Parkia platycephala seeds under different conditions of water and saline stress. Seed germination was tested with solutions of poly (ethylene glycol) 6000 and sodium chloride (NaCl) at seven osmotic potentials [0.0, -0.2, -0.4, -0.6, -0.8, -1.0, and -1.2MPa (megapascal)] and four replicates with 25 seeds in a completely randomized design, simulating the water and saline stress levels, respectively. The following seedling variables were evaluated: germination percentage, germination speed index, length, and dry mass. Results showed significant interaction between the agent and the osmotic potential for all evaluated variables. P. platycephala seeds presented higher tolerance to saline stress simulated by NaCl than to water stress, showing germination performance appropriate for glycophyte plants.info:eu-repo/semantics/openAccessInstituto de Florestas da Universidade Federal Rural do Rio de JaneiroFloresta e Ambiente v.26 n.1 20192019-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000100135en10.1590/2179-8087.028215 |
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Santos,Luana Martins dos Farias,Séfora Gil Gomes de Silva,Romário Bezerra e Dias,Bruna Anair Souto Silva,Leovandes Soares da |
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Santos,Luana Martins dos Farias,Séfora Gil Gomes de Silva,Romário Bezerra e Dias,Bruna Anair Souto Silva,Leovandes Soares da Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| author_facet |
Santos,Luana Martins dos Farias,Séfora Gil Gomes de Silva,Romário Bezerra e Dias,Bruna Anair Souto Silva,Leovandes Soares da |
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Santos,Luana Martins dos |
| title |
Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| title_short |
Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| title_full |
Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| title_fullStr |
Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| title_full_unstemmed |
Ecophysiology of Germination of Parkia platycephala Benth. Seeds |
| title_sort |
ecophysiology of germination of parkia platycephala benth. seeds |
| description |
ABSTRACT Water is considered the most important environmental resource for the germination process. This study aimed to evaluate the germination performance of Parkia platycephala seeds under different conditions of water and saline stress. Seed germination was tested with solutions of poly (ethylene glycol) 6000 and sodium chloride (NaCl) at seven osmotic potentials [0.0, -0.2, -0.4, -0.6, -0.8, -1.0, and -1.2MPa (megapascal)] and four replicates with 25 seeds in a completely randomized design, simulating the water and saline stress levels, respectively. The following seedling variables were evaluated: germination percentage, germination speed index, length, and dry mass. Results showed significant interaction between the agent and the osmotic potential for all evaluated variables. P. platycephala seeds presented higher tolerance to saline stress simulated by NaCl than to water stress, showing germination performance appropriate for glycophyte plants. |
| publisher |
Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro |
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2019 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000100135 |
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