Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)

Detalhes bibliográficos
Autor(a) principal: Koutroubas, Spyridon D.
Data de Publicação: 2016
Outros Autores: Damalas, Christos A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/33007
Resumo: Chlormequat chloride (CCC) is used to inhibit extension growth in cereals and promote branching and flowering in potted ornamental plants produced in greenhouses; however, experimental data on the use of CCC in field sunflower are limited. Field experiments were conducted to study the effect of foliar applications of CCC at rates of 3,000 gha-1 (single application) and 3,000 plus 3,000 g ha-1 (double application) on the morphology and productivity of sunflower plants. CCC provoked some foliar injury on sunflower plants within a week after application, but the effect was transient; the symptoms were reduced over time and the plants recovered completely. Single application of CCC did not provide significant height reduction of sunflower plants as opposed to double application, which reduced plant height at maturity by 12.7% (or by 43.4 cm). Both application schemes promoted flowering and induced the production of more achenes, but finally resulted in reduced achene yield per plant by 17.8% and 20.3%, respectively, compared with the non-treated control. The achene yield reduction resulted by the reduction in the 100-achene weight. The study provides new evidence that allow a better understanding of the mode of action of CCC in sunflower. Overall, the foliar applications of CCC at the rates tested in this study either did not provide any advantage in terms of height reduction of sunflower plants or the height reduction achieved was accompanied by significant reduction in achene yield. On the basis of all the above, CCC does not appear to be a suitable growth regulator for the control of plant height in sunflower.
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spelling Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC) sunflower100-achene weightachene yieldfoliar applicationsgrowth regulatorAgricultural SciencesChlormequat chloride (CCC) is used to inhibit extension growth in cereals and promote branching and flowering in potted ornamental plants produced in greenhouses; however, experimental data on the use of CCC in field sunflower are limited. Field experiments were conducted to study the effect of foliar applications of CCC at rates of 3,000 gha-1 (single application) and 3,000 plus 3,000 g ha-1 (double application) on the morphology and productivity of sunflower plants. CCC provoked some foliar injury on sunflower plants within a week after application, but the effect was transient; the symptoms were reduced over time and the plants recovered completely. Single application of CCC did not provide significant height reduction of sunflower plants as opposed to double application, which reduced plant height at maturity by 12.7% (or by 43.4 cm). Both application schemes promoted flowering and induced the production of more achenes, but finally resulted in reduced achene yield per plant by 17.8% and 20.3%, respectively, compared with the non-treated control. The achene yield reduction resulted by the reduction in the 100-achene weight. The study provides new evidence that allow a better understanding of the mode of action of CCC in sunflower. Overall, the foliar applications of CCC at the rates tested in this study either did not provide any advantage in terms of height reduction of sunflower plants or the height reduction achieved was accompanied by significant reduction in achene yield. On the basis of all the above, CCC does not appear to be a suitable growth regulator for the control of plant height in sunflower.EDUFU2016-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/3300710.14393/BJ-v32n6a2016-33007Bioscience Journal ; Vol. 32 No. 6 (2016): Nov./Dec.; 1493-1501Bioscience Journal ; v. 32 n. 6 (2016): Nov./Dec.; 1493-15011981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/33007/19383Brazil; ContemporaryCopyright (c) 2016 Spyridon D. Koutroubas, Christos A. Damalashttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessKoutroubas, Spyridon D.Damalas, Christos A.2022-02-16T17:15:47Zoai:ojs.www.seer.ufu.br:article/33007Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-02-16T17:15:47Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
title Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
spellingShingle Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
Koutroubas, Spyridon D.
sunflower
100-achene weight
achene yield
foliar applications
growth regulator
Agricultural Sciences
title_short Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
title_full Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
title_fullStr Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
title_full_unstemmed Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
title_sort Morpho-physiological responses of sunflower to foliar applications of chlormequat chloride (CCC)
author Koutroubas, Spyridon D.
author_facet Koutroubas, Spyridon D.
Damalas, Christos A.
author_role author
author2 Damalas, Christos A.
author2_role author
dc.contributor.author.fl_str_mv Koutroubas, Spyridon D.
Damalas, Christos A.
dc.subject.por.fl_str_mv sunflower
100-achene weight
achene yield
foliar applications
growth regulator
Agricultural Sciences
topic sunflower
100-achene weight
achene yield
foliar applications
growth regulator
Agricultural Sciences
description Chlormequat chloride (CCC) is used to inhibit extension growth in cereals and promote branching and flowering in potted ornamental plants produced in greenhouses; however, experimental data on the use of CCC in field sunflower are limited. Field experiments were conducted to study the effect of foliar applications of CCC at rates of 3,000 gha-1 (single application) and 3,000 plus 3,000 g ha-1 (double application) on the morphology and productivity of sunflower plants. CCC provoked some foliar injury on sunflower plants within a week after application, but the effect was transient; the symptoms were reduced over time and the plants recovered completely. Single application of CCC did not provide significant height reduction of sunflower plants as opposed to double application, which reduced plant height at maturity by 12.7% (or by 43.4 cm). Both application schemes promoted flowering and induced the production of more achenes, but finally resulted in reduced achene yield per plant by 17.8% and 20.3%, respectively, compared with the non-treated control. The achene yield reduction resulted by the reduction in the 100-achene weight. The study provides new evidence that allow a better understanding of the mode of action of CCC in sunflower. Overall, the foliar applications of CCC at the rates tested in this study either did not provide any advantage in terms of height reduction of sunflower plants or the height reduction achieved was accompanied by significant reduction in achene yield. On the basis of all the above, CCC does not appear to be a suitable growth regulator for the control of plant height in sunflower.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-06
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/33007
10.14393/BJ-v32n6a2016-33007
url https://seer.ufu.br/index.php/biosciencejournal/article/view/33007
identifier_str_mv 10.14393/BJ-v32n6a2016-33007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/33007/19383
dc.rights.driver.fl_str_mv Copyright (c) 2016 Spyridon D. Koutroubas, Christos A. Damalas
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2016 Spyridon D. Koutroubas, Christos A. Damalas
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 32 No. 6 (2016): Nov./Dec.; 1493-1501
Bioscience Journal ; v. 32 n. 6 (2016): Nov./Dec.; 1493-1501
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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