Paclobutrazol for Height Control of Petunias

The effects of paclobutrazol on the height of Petunia × hybrida hort. ex E. Vilm. were studied. An experiment on ’Bravo F1’ was performed at the National Institute for Agricultural Technology (INTA), San Pedro Agricultural Experimental Station (33°4’ S, 59°4’...

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Autores principales:	Francescangeli,Nora, Zagabria,Ana
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2008
Materias:	plant growth regulator plant architecture flower colour application time
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300012
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spelling	oai:scielo:S0718-583920080003000122018-10-01Paclobutrazol for Height Control of PetuniasFrancescangeli,NoraZagabria,Ana plant growth regulator plant architecture flower colour application time The effects of paclobutrazol on the height of Petunia × hybrida hort. ex E. Vilm. were studied. An experiment on ’Bravo F1’ was performed at the National Institute for Agricultural Technology (INTA), San Pedro Agricultural Experimental Station (33°4’ S, 59°4’ W), Buenos Aires Province, Argentina, in the spring of 2006. Treatments consisted of three colours of flower (white, red and blue), four concentrations of paclobutrazol by irrigation (0, 5, 10 and 15 mg L-1 and three application times (at 10-12, 18-20 and 26-28 leaves). Height at 45 d after transplanting (dat), days to appearance, opening and fall of the first flower and number of flowers at 21 and 45 dat were registered. Differences between control plants due to flower colour were detected, and would indicate the need of a differential management: at 45 dat, the height of red-flowered plants (22.3 cm) was less (P < 0.05) than white- (25.2 cm) or blue-flowered plants (26.4 cm). Paclobutrazol allowed for reducing height in all treated plants. The minimal concentrations that induced maximum effects were: 10 mg L-1 for blue-flowered plants (56% shortening), 5 mg L-1 for white-flowered plants (40% shortening) and 10 mg L-1 for red-flowered plants (38% shortening). In order to minimize the slightly deleterious effects detected in the number of blue and red flowers at 45 dat, early application would be advisable (10-12 leaves) for blue-flowered plants and more delayed (at 18-20 leaves) for red-flowered plants.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.68 n.3 20082008-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300012en10.4067/S0718-58392008000300012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	plant growth regulator plant architecture flower colour application time
spellingShingle	plant growth regulator plant architecture flower colour application time Francescangeli,Nora Zagabria,Ana Paclobutrazol for Height Control of Petunias
description	The effects of paclobutrazol on the height of Petunia × hybrida hort. ex E. Vilm. were studied. An experiment on ’Bravo F1’ was performed at the National Institute for Agricultural Technology (INTA), San Pedro Agricultural Experimental Station (33°4’ S, 59°4’ W), Buenos Aires Province, Argentina, in the spring of 2006. Treatments consisted of three colours of flower (white, red and blue), four concentrations of paclobutrazol by irrigation (0, 5, 10 and 15 mg L-1 and three application times (at 10-12, 18-20 and 26-28 leaves). Height at 45 d after transplanting (dat), days to appearance, opening and fall of the first flower and number of flowers at 21 and 45 dat were registered. Differences between control plants due to flower colour were detected, and would indicate the need of a differential management: at 45 dat, the height of red-flowered plants (22.3 cm) was less (P < 0.05) than white- (25.2 cm) or blue-flowered plants (26.4 cm). Paclobutrazol allowed for reducing height in all treated plants. The minimal concentrations that induced maximum effects were: 10 mg L-1 for blue-flowered plants (56% shortening), 5 mg L-1 for white-flowered plants (40% shortening) and 10 mg L-1 for red-flowered plants (38% shortening). In order to minimize the slightly deleterious effects detected in the number of blue and red flowers at 45 dat, early application would be advisable (10-12 leaves) for blue-flowered plants and more delayed (at 18-20 leaves) for red-flowered plants.
author	Francescangeli,Nora Zagabria,Ana
author_facet	Francescangeli,Nora Zagabria,Ana
author_sort	Francescangeli,Nora
title	Paclobutrazol for Height Control of Petunias
title_short	Paclobutrazol for Height Control of Petunias
title_full	Paclobutrazol for Height Control of Petunias
title_fullStr	Paclobutrazol for Height Control of Petunias
title_full_unstemmed	Paclobutrazol for Height Control of Petunias
title_sort	paclobutrazol for height control of petunias
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300012
work_keys_str_mv	AT francescangelinora paclobutrazolforheightcontrolofpetunias AT zagabriaana paclobutrazolforheightcontrolofpetunias
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Paclobutrazol for Height Control of Petunias

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