Effect of daminozide, paclobutrazol and chlormequat on development and quality of potted 'persian carpet' zinnia

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dc.contributor.authorPinto, A. C. R. [UNESP]
dc.contributor.authorRodrigues, T. J. D. [UNESP]
dc.contributor.authorLeite, I. C. [UNESP]
dc.contributor.authorBarbosa, J. C. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:45Z
dc.date.available2014-05-27T11:21:45Z
dc.date.issued2005-12-01
dc.description.abstractIn Brazil zinnias have good prospect for the flowering potted plant market, once consumers demand for new forms of products is stimulated by novelty. 'Persian Carpet' is a highly ornamental plant, with fast growth, minimal labor requirements and low cost seeds. The present study evaluated the effect of growth regulators on development and quality of 'Persian Carpet' grown as a potted plant. Growth regulators are commonly used to control growth and produce short and compact plants. Paclobutrazol (0.5, 0.75 and 1.0 mg a.i./pot) and chlormequat (1.0, 2.0 and 3.0 g. L-1) were applied as a single drench, and daminozide (2.5, 3.75 and 5.0 g. L-1) as a single foliar spray to runoff. Regulators were applied at apical flower bud stage. Daminozide (5.0 g. L-1), paclobutrazol (0.5, 0.75 and 1.0 mg a.i./pot) and chlormequat (1.0 g. L-1) significantly reduced plant height and side branches length compared to the control. Plant height showed a negative linear response to the increasing concentration of daminozide or paclobutrazol. Paclobutrazol (1.0 mg a.i./pot) and chlormequat (1.0 g. L-1) increased foliage and flowers harvest index. Plant spread diameter and canopy shape were improved with paclobutrazol (0.75 mg a.i./pot). Chlormequat (2.0 and 3.0 g. L-1) caused phytotoxicity symptoms, turning plants unsuitable for commercialization. Studied regulators concentrations did not affect flower diameter and production cycle. Although regulators controlled height and side branches growth significantly, plants were not short and compact enough to attend market quality.en
dc.description.affiliationFCAV-UNESP Departamento de Biologia Aplicada à Agropecuária, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP
dc.description.affiliationFCAV-UNESP Departamento de Ciências Exatas, Jaboticabal, SP
dc.description.affiliationUnespFCAV-UNESP Departamento de Biologia Aplicada à Agropecuária, Via de Acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900, Jaboticabal, SP
dc.description.affiliationUnespFCAV-UNESP Departamento de Ciências Exatas, Jaboticabal, SP
dc.format.extent399-406
dc.identifierhttp://www.actahort.org/books/683/683_52.htm
dc.identifier.citationActa Horticulturae, v. 683, p. 399-406.
dc.identifier.issn0567-7572
dc.identifier.scopus2-s2.0-34249012477
dc.identifier.urihttp://hdl.handle.net/11449/68653
dc.identifier.wosWOS:000231867400052
dc.language.isoeng
dc.relation.ispartofActa Horticulturae
dc.relation.ispartofsjr0,198
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectGrowth regulators
dc.subjectPot plant
dc.subjectZinnia haageana
dc.titleEffect of daminozide, paclobutrazol and chlormequat on development and quality of potted 'persian carpet' zinniaen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.ishs.org/authors
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Biologia - FCAV
Artigos - Ciências Exatas - FCAV