Growth regulators and KNO3 on seed germination of Angelonia salicariifolia

Detalhes bibliográficos
Autor(a) principal: Pinto, A. C.R. [UNESP]
Data de Publicação: 2009
Outros Autores: Rodrigues, T. J.D. [UNESP], Leite, I. C. [UNESP], Barbosa, J. C. [UNESP]
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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spelling 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)
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