Ação de fitoreguladores no desenvolvimento de Chrysanthemum leucanthemum L.

Castro, Paulo R.C.; Demétrio, Clarice G.B.; Carlucci, Marisa V.

doi:10.1590/S0071-12761979000100004

Resumos

Plantas ornamentais de Chrysanthemum leucanthemum, cultivadas em recipientes contendo solo como substrato, em condições de estufa, foram pulverizadas em maio e junho com reguladores de crescimento, com a finalidade de se verificar a ação dos mesmos no desenvolvimento das plantas, determinado em outubro. Aplicaram-se SADH nas concentrações de 1250, 2500 e 5000 ppm, CCC na dosagem de 2000 ppm, CEPA 320 ppm, MH 1000 ppm, GA 50 e 100 ppm, IAA 100 ppm e água como controle. Hidrazida maleica 1000 ppm reduziu o número de folhas e hastes formadas. Tratamentos com ácido succínico - 2,2-dimetilhidrazida diminuiram a altura do caule e o número de hastes das plantas. Aplicações de ácido indolilacético 100 ppm promoveram a formação de maior número de folhas e de hastes em Chrysanthemum. Pulverizações com ácido giberélico 100 ppm incrementaram a altura do caule da espécie estudada.

Plants of Chrysanthemum leucanthemum grown in pots with soil under greenhouse conditions, were sprayed with growth regulators twice, in May and June, to study the development of the plants in October. Succinic acid-2,2-dimethylhydrazide (SADH) at concentrations of 1250, 2500 and 5000 ppm, (2-chloroethyl) trimethylammonium chloride (CCC) 2000 ppm, (2-chloroethyl) phosphonic acid (CEPA) 320 ppm, maleic hydrazide (MH;) 1000 ppm, gibberellic acid (GA) 50 and 100 ppm, indolylacetic acid (IAA) 100 ppm, and water as check treatment, were applied. MH 1000 ppm reduced the number of leaves and stems. SADH treatments reduced the shoot growth and the number of stems. Applications of IAA 100 ppm promoted the formation of higher number of leaves and stems in Chrysanthemum leucanthemum. It was seen that sprays with GA at a concentration of 100 ppm elongated shoots.

Paulo R.C. Castro^I; Clarice G.B. Demétrio^II; Marisa V. Carlucci^III

^IDepartamento de Botânica, E.S.A."Luiz de Queiroz", USP

^IIDepartamento de Matemática e Estatística, E.S.A. "Luiz de Queiroz", USP

^IIIInstituto de Botânica do Estado de São Paulo

RESUMO

Plantas ornamentais de Chrysanthemum leucanthemum, cultivadas em recipientes contendo solo como substrato, em condições de estufa, foram pulverizadas em maio e junho com reguladores de crescimento, com a finalidade de se verificar a ação dos mesmos no desenvolvimento das plantas, determinado em outubro. Aplicaram-se SADH nas concentrações de 1250, 2500 e 5000 ppm, CCC na dosagem de 2000 ppm, CEPA 320 ppm, MH 1000 ppm, GA 50 e 100 ppm, IAA 100 ppm e água como controle.

Hidrazida maleica 1000 ppm reduziu o número de folhas e hastes formadas. Tratamentos com ácido succínico - 2,2-dimetilhidrazida diminuiram a altura do caule e o número de hastes das plantas. Aplicações de ácido indolilacético 100 ppm promoveram a formação de maior número de folhas e de hastes em Chrysanthemum. Pulverizações com ácido giberélico 100 ppm incrementaram a altura do caule da espécie estudada.

SUMMARY

Plants of Chrysanthemum leucanthemum grown in pots with soil under greenhouse conditions, were sprayed with growth regulators twice, in May and June, to study the development of the plants in October. Succinic acid-2,2-dimethylhydrazide (SADH) at concentrations of 1250, 2500 and 5000 ppm, (2-chloroethyl) trimethylammonium chloride (CCC) 2000 ppm, (2-chloroethyl) phosphonic acid (CEPA) 320 ppm, maleic hydrazide (MH;) 1000 ppm, gibberellic acid (GA) 50 and 100 ppm, indolylacetic acid (IAA) 100 ppm, and water as check treatment, were applied.

MH 1000 ppm reduced the number of leaves and stems. SADH treatments reduced the shoot growth and the number of stems. Applications of IAA 100 ppm promoted the formation of higher number of leaves and stems in Chrysanthemum leucanthemum. It was seen that sprays with GA at a concentration of 100 ppm elongated shoots.

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LITERATURA CITADA

Entregue para publicação em 21.02.1979.

CARPENTER, W.J.; CARLSON, W.H., 1972. The effect of growth regulators on Chrysanthemum. J. Amer. Soc. Hort. Sci. 97: 349-351.
CATHEY, H.M., 1959. Effects of gibberellin and Amo-1618 on growth and flowering of Chrysanthemum morifolium on short photoperiods. In R.B.Withrow (ed.), Photoperiodism and related phenomena in plants and animals. Amer. Assoc. Advance Sci., Washington, D.C., 365-371.
CATHEY, H.M., 1967. Labor-and time-saving chemicals and techniques. Florist and Nursery Exchange, February 18.
CULBERT, J.R.; FIZZELL, J.A., 1969. Chrysanthemums for the home garden. Univ. III. Coll. Agr. Coop. Ext. Ser. Bull. 883. 15 p.
FIGUEIREDO, E.R., 1953. Floricultura brasileira. 7. Chrysanthemos e margaridas. Ed. Chácaras e Quintais, São Paulo 31 p.
HARADA, H.; NITSCH, J.P., 1959. Flower induction in Japanese chrysanthemums with gibberellic acid. Science 129:777-778.
LEMAIRE, P., 1964. Mis crisanthemos. Trad. N. Clarasó, Editorial Gustavo Gili, Barcelona, 31 p.
LINDSTROM, R.S.; ASEN, S., 1967. Chemical control of the flowering of Chrysanthemum morifolium Ram. I. Auxin and flowering. Proc. Amer. Soc. Hort. Sci. 90:403-408.
SCHWABE, W.W., 1971. Physiology of vegetative reproduction and flowering. In F.C. Steward (ed.), Plant physiology: a treatise. Academic Press, New York, v. VI A, 233-411.
SEN, P.K.; SEN, S.K., 1968. Effects of growth retarding and promoting chemicals on growth and flowering of some annuals. Indian J. Hort. 25:219-224.
SHANKS, J.B., 1969. Some effects and potential uses of ethrel on ornamental crops. HortScience 4:56-58.
TIJA, B.O.; ROGERS, M.N.; HARTLEY, D.E., 1969. Effects of ethylene on morphology and flowering of Chrysanthemum morifolium Ramat. J. Amer. Soc. Hort. Sci. 94:35-39.

**Ação de fitoreguladores no desenvolvimento de Chrysanthemum leucanthemum L.**

Action of growth regulators on Chrysanthemum leucanthemum L.

Datas de Publicação

Publicação nesta coleção
11 Maio 2012
Data do Fascículo
1979

Histórico

Recebido
21 Fev 1979

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] CARPENTER, W.J.; CARLSON, W.H., 1972. The effect of growth regulators on Chrysanthemum. J. Amer. Soc. Hort. Sci. 97: 349-351.

[2] CATHEY, H.M., 1959. Effects of gibberellin and Amo-1618 on growth and flowering of Chrysanthemum morifolium on short photoperiods. In R.B.Withrow (ed.), Photoperiodism and related phenomena in plants and animals. Amer. Assoc. Advance Sci., Washington, D.C., 365-371.

[3] CATHEY, H.M., 1967. Labor-and time-saving chemicals and techniques. Florist and Nursery Exchange, February 18.

[4] CULBERT, J.R.; FIZZELL, J.A., 1969. Chrysanthemums for the home garden. Univ. III. Coll. Agr. Coop. Ext. Ser. Bull. 883. 15 p.

[5] FIGUEIREDO, E.R., 1953. Floricultura brasileira. 7. Chrysanthemos e margaridas. Ed. Chácaras e Quintais, São Paulo 31 p.

[6] HARADA, H.; NITSCH, J.P., 1959. Flower induction in Japanese chrysanthemums with gibberellic acid. Science 129:777-778.

[7] LEMAIRE, P., 1964. Mis crisanthemos. Trad. N. Clarasó, Editorial Gustavo Gili, Barcelona, 31 p.

[8] LINDSTROM, R.S.; ASEN, S., 1967. Chemical control of the flowering of Chrysanthemum morifolium Ram. I. Auxin and flowering. Proc. Amer. Soc. Hort. Sci. 90:403-408.

[9] SCHWABE, W.W., 1971. Physiology of vegetative reproduction and flowering. In F.C. Steward (ed.), Plant physiology: a treatise. Academic Press, New York, v. VI A, 233-411.

[10] SEN, P.K.; SEN, S.K., 1968. Effects of growth retarding and promoting chemicals on growth and flowering of some annuals. Indian J. Hort. 25:219-224.

[11] SHANKS, J.B., 1969. Some effects and potential uses of ethrel on ornamental crops. HortScience 4:56-58.

[12] TIJA, B.O.; ROGERS, M.N.; HARTLEY, D.E., 1969. Effects of ethylene on morphology and flowering of Chrysanthemum morifolium Ramat. J. Amer. Soc. Hort. Sci. 94:35-39.

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