Growth regulators and KNO3 on seed germination of Angelonia salicariifolia
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.17660/ActaHortic.2009.813.59 http://hdl.handle.net/11449/219529 |
Resumo: | Angelonia salicariifolia is an herbaceous perennial native to Brazil with ornamental potential as garden plant, cut-flower and potted plant. It has blue flowers 1.0 to 1.4 cm long, in 10-30 cm long terminal racemes. In previous studies seeds of A. salicariifolia showed a positive photoblastic behavior under constant temperatures of 10, 15, 20, 25, 30 and 35°C. The present study evaluated the effects of growth regulators (100, 200, 300, 400, 500 mg L -1 of gibberellic acid and 2.25, 11.3, 22.5 mg L-1 of 6-benzylamino-purine) and potassium nitrate (0.2 and 1.0 %) on promoting its seed germination. The experiment was conducted in a completely randomized design with six replications of 25 seeds, for each treatment. Seeds from dehiscent capsules were sown on one layer of filter paper and moistened with growth regulators or KNO3 solutions. Germination was carried out at 25°C ± 1°C, under continuous light or darkness. Germination (protusion of the radicle) was observed daily for 20 days. In the dark, only gibberellic acid promoted seed germination. The percentage of germination and the speed of germination index at 400 mg L-1 (47.3%; 0.86) and 500 mg L -1 (52.0%; 0.95) were significantly higher compared to 100 mg L -1 (27.8%; 0.38) and 200 mg L-1 (32.3%; 0.49). The mean germination time at 500 mg L-1 (10.0 days) was significantly smaller compared to 100 mg L-1 (11.9 days) and 200 mg L-1 (11.5 days). Under light, treatments did not differ among each other or from the control, except for 22.5 mg L-1 of 6-benzylamino-purine and potassium nitrate (1.0%), which decreased the percentage of germination and the speed of germination index compared to control. The application of growth regulators or potassium nitrate under light condition is not necessary, since these treatments did not improve germination percentage or the speed of germination index. |
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Growth regulators and KNO3 on seed germination of Angelonia salicariifoliaCytokininGibberellinPropagationScrophulariaceaeAngelonia salicariifolia is an herbaceous perennial native to Brazil with ornamental potential as garden plant, cut-flower and potted plant. It has blue flowers 1.0 to 1.4 cm long, in 10-30 cm long terminal racemes. In previous studies seeds of A. salicariifolia showed a positive photoblastic behavior under constant temperatures of 10, 15, 20, 25, 30 and 35°C. The present study evaluated the effects of growth regulators (100, 200, 300, 400, 500 mg L -1 of gibberellic acid and 2.25, 11.3, 22.5 mg L-1 of 6-benzylamino-purine) and potassium nitrate (0.2 and 1.0 %) on promoting its seed germination. The experiment was conducted in a completely randomized design with six replications of 25 seeds, for each treatment. Seeds from dehiscent capsules were sown on one layer of filter paper and moistened with growth regulators or KNO3 solutions. Germination was carried out at 25°C ± 1°C, under continuous light or darkness. Germination (protusion of the radicle) was observed daily for 20 days. In the dark, only gibberellic acid promoted seed germination. The percentage of germination and the speed of germination index at 400 mg L-1 (47.3%; 0.86) and 500 mg L -1 (52.0%; 0.95) were significantly higher compared to 100 mg L -1 (27.8%; 0.38) and 200 mg L-1 (32.3%; 0.49). The mean germination time at 500 mg L-1 (10.0 days) was significantly smaller compared to 100 mg L-1 (11.9 days) and 200 mg L-1 (11.5 days). Under light, treatments did not differ among each other or from the control, except for 22.5 mg L-1 of 6-benzylamino-purine and potassium nitrate (1.0%), which decreased the percentage of germination and the speed of germination index compared to control. The application of growth regulators or potassium nitrate under light condition is not necessary, since these treatments did not improve germination percentage or the speed of germination index.Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, SPFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n, 14884-900, Jaboticabal, SPUniversidade Estadual Paulista (UNESP)Pinto, A. C.R. [UNESP]Rodrigues, T. J.D. [UNESP]Leite, I. C. [UNESP]Barbosa, J. C. [UNESP]2022-04-28T18:56:08Z2022-04-28T18:56:08Z2009-03-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article453-458http://dx.doi.org/10.17660/ActaHortic.2009.813.59Acta Horticulturae, v. 813, p. 453-458.0567-7572http://hdl.handle.net/11449/21952910.17660/ActaHortic.2009.813.592-s2.0-70350073831Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Horticulturaeinfo:eu-repo/semantics/openAccess2022-04-28T18:56:08Zoai:repositorio.unesp.br:11449/219529Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:02:18.919407Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
title |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
spellingShingle |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia Pinto, A. C.R. [UNESP] Cytokinin Gibberellin Propagation Scrophulariaceae |
title_short |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
title_full |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
title_fullStr |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
title_full_unstemmed |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
title_sort |
Growth regulators and KNO3 on seed germination of Angelonia salicariifolia |
author |
Pinto, A. C.R. [UNESP] |
author_facet |
Pinto, A. C.R. [UNESP] Rodrigues, T. J.D. [UNESP] Leite, I. C. [UNESP] Barbosa, J. C. [UNESP] |
author_role |
author |
author2 |
Rodrigues, T. J.D. [UNESP] Leite, I. C. [UNESP] Barbosa, J. C. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Pinto, A. C.R. [UNESP] Rodrigues, T. J.D. [UNESP] Leite, I. C. [UNESP] Barbosa, J. C. [UNESP] |
dc.subject.por.fl_str_mv |
Cytokinin Gibberellin Propagation Scrophulariaceae |
topic |
Cytokinin Gibberellin Propagation Scrophulariaceae |
description |
Angelonia salicariifolia is an herbaceous perennial native to Brazil with ornamental potential as garden plant, cut-flower and potted plant. It has blue flowers 1.0 to 1.4 cm long, in 10-30 cm long terminal racemes. In previous studies seeds of A. salicariifolia showed a positive photoblastic behavior under constant temperatures of 10, 15, 20, 25, 30 and 35°C. The present study evaluated the effects of growth regulators (100, 200, 300, 400, 500 mg L -1 of gibberellic acid and 2.25, 11.3, 22.5 mg L-1 of 6-benzylamino-purine) and potassium nitrate (0.2 and 1.0 %) on promoting its seed germination. The experiment was conducted in a completely randomized design with six replications of 25 seeds, for each treatment. Seeds from dehiscent capsules were sown on one layer of filter paper and moistened with growth regulators or KNO3 solutions. Germination was carried out at 25°C ± 1°C, under continuous light or darkness. Germination (protusion of the radicle) was observed daily for 20 days. In the dark, only gibberellic acid promoted seed germination. The percentage of germination and the speed of germination index at 400 mg L-1 (47.3%; 0.86) and 500 mg L -1 (52.0%; 0.95) were significantly higher compared to 100 mg L -1 (27.8%; 0.38) and 200 mg L-1 (32.3%; 0.49). The mean germination time at 500 mg L-1 (10.0 days) was significantly smaller compared to 100 mg L-1 (11.9 days) and 200 mg L-1 (11.5 days). Under light, treatments did not differ among each other or from the control, except for 22.5 mg L-1 of 6-benzylamino-purine and potassium nitrate (1.0%), which decreased the percentage of germination and the speed of germination index compared to control. The application of growth regulators or potassium nitrate under light condition is not necessary, since these treatments did not improve germination percentage or the speed of germination index. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-03-04 2022-04-28T18:56:08Z 2022-04-28T18:56:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.17660/ActaHortic.2009.813.59 Acta Horticulturae, v. 813, p. 453-458. 0567-7572 http://hdl.handle.net/11449/219529 10.17660/ActaHortic.2009.813.59 2-s2.0-70350073831 |
url |
http://dx.doi.org/10.17660/ActaHortic.2009.813.59 http://hdl.handle.net/11449/219529 |
identifier_str_mv |
Acta Horticulturae, v. 813, p. 453-458. 0567-7572 10.17660/ActaHortic.2009.813.59 2-s2.0-70350073831 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Horticulturae |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
453-458 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128887849222144 |