Efeitos de fitoreguladores no desenvolvimento da soja (Glycine max cv. Davis)

Castro, Paulo R.C.; Moraes, Roberto S.

doi:10.1590/S0071-12761980000200006

Resumos

Verificou-se, em condições de casa de vegetação, o efeito de fitoreguladores no desenvolvimento da soja (Glycine max cv. Davis). Aplicou-se por pulverização, 21 dias após a semeadura, cloreto (2-cloroetil) trimetilamônio (CCC) 2000 ppm ácido succínico-2,2-dimetilhidrazida (SADH) 4000 ppm, ácido giberélico (GA) 100 ppm, ácido indolilacético (IAA) 100 ppm, além do controle. Realizaram-se determinações semanais da altura da planta, número total de folhas, número de folhas na haste principal, número de folhas nas hastes secundárias e diâmetro do caule. Utilizou-se delineamento inteiramente casualizado com 6 repetições e procedeu-se a comparação de médias pelo teste Tukey (5%). Plantas tratadas com GA mostraram

This study was conducted with the objetive of determining the effects of growth regulators on soybean plant (Glycine max) under greenhouse conditions. Plants 21 days after sowing were sprayed with (2-chloroethyl) trimethyl ammonium chloride (CCC) 2,000 ppm, succinic acid-2,2-dimethylhydrazide (SADH) 4,000 ppm, giberellic acid (GA) 100 ppm, indolylacetic acid (IAA) 100 ppm, and water as a check treatment. GA increased plant height while SADH and CCC showed a reduction for this trait. On the other hand, CCC and SADH treatments showed an increasing trend for total number of leaves. Number of leaves in the main stem was increased with GA, and number of leaves in secondary stems was increased with SADH. Diameter of soybean stem was increased with CCC.

Paulo R.C. Castro^I; Roberto S. Moraes^II

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

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

RESUMO

Verificou-se, em condições de casa de vegetação, o efeito de fitoreguladores no desenvolvimento da soja (Glycine max cv. Davis). Aplicou-se por pulverização, 21 dias após a semeadura, cloreto (2-cloroetil) trimetilamônio (CCC) 2000 ppm ácido succínico-2,2-dimetilhidrazida (SADH) 4000 ppm, ácido giberélico (GA) 100 ppm, ácido indolilacético (IAA) 100 ppm, além do controle. Realizaram-se determinações semanais da altura da planta, número total de folhas, número de folhas na haste principal, número de folhas nas hastes secundárias e diâmetro do caule. Utilizou-se delineamento inteiramente casualizado com 6 repetições e procedeu-se a comparação de médias pelo teste Tukey (5%). Plantas tratadas com GA mostraram

SUMMARY

This study was conducted with the objetive of determining the effects of growth regulators on soybean plant (Glycine max) under greenhouse conditions. Plants 21 days after sowing were sprayed with (2-chloroethyl) trimethyl ammonium chloride (CCC) 2,000 ppm, succinic acid-2,2-dimethylhydrazide (SADH) 4,000 ppm, giberellic acid (GA) 100 ppm, indolylacetic acid (IAA) 100 ppm, and water as a check treatment. GA increased plant height while SADH and CCC showed a reduction for this trait. On the other hand, CCC and SADH treatments showed an increasing trend for total number of leaves. Number of leaves in the main stem was increased with GA, and number of leaves in secondary stems was increased with SADH. Diameter of soybean stem was increased with CCC.

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LITERATURA CITADA

Entregue para publicação em 25/11/1980.

BOSTRACK, J.M.; STRUCKMEYER, B.E., 1964. Effects of gibberellic acid on the anatomy of soybeans (Glycine max). Amer. J. Bot. 51: 611-617.
BOUNIOLS, A.; DECAU, J.; PACE, A.; MONDIES, M.; PUJOL, B., 1978. Influence de rêgulateurs de croissance (B9 et CCC) sur le dêveloppment et la fructification de cultures de soja (Glycine max L. Merrill) placees dans differentes conditions d'alimentation hydrique et de competition intraspecifique. Comp. Rend. Hebd. Seanc. Acad. Sci. 286: 1673 1676.
CHAILAKHYAN, M.Kh. ; ARUTYUNYAN, R. Sh. ; STEPANYAN, M.D.; KARAPETYAN, N.A., 1973. Effect of the growth retardant CCC on the growth of leguminous plants and nodule formation under different methods of application. Doklady Akademii Nauk Armyanskoi 56: 182-187.
GOWDA, P.M., 1972. Effects of certain cultural and chemical treatments on growth, productivity and seed composition of edible soybeans, Glycine max (L.) Merrill. Diss. Abstr. Intern. 33: 516.
HOWELL, R.W., 1963. Physiology of the soybean. In: The soy bean, A.G. Norman, ed. Academic Press, New York, 75-124.
LAM-SANCHEZ, A.; BARRETO, M.; PITELLI, R.A., 1975. Efeitos do CCC (cloreto de 2-cloro etil trimetil amonio) na cultura da soja. Científica 3: 48-54.
MITROVIC, A.; PAVLICIC, J., 1959. The application of gibberellin on cultivated plants. The effect of gibberellin on the growth and development of soybean and lespedeza. Arhiv. Polj. Nauke 12: 22-34.
OUNSWORTH, L.F.; PILLAY, D.T.N., 1969. Response of soybeans to gibberellic acid and succinic acid 2,2-dimethyl hydrazide (Alar) at different levels of nitrogen, phosphorus and potassium. Phyton 26: 207-212.
PILLAY, D.T.N., 1965. Responses of soybean seedlings to N -dimethylaminosuccinamic acid, a growth retardant. Can. J. Bot. 43: 1477-1478.

**Efeitos de fitoreguladores no desenvolvimento da soja (Glycine max cv. Davis)**

Effects of growth regulators on development of soybean (Glycine max cv. Davis)

Datas de Publicação

Publicação nesta coleção
19 Abr 2012
Data do Fascículo
1980

Histórico

Recebido
25 Nov 1980

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

[1] BOSTRACK, J.M.; STRUCKMEYER, B.E., 1964. Effects of gibberellic acid on the anatomy of soybeans (Glycine max). Amer. J. Bot. 51: 611-617.

[2] BOUNIOLS, A.; DECAU, J.; PACE, A.; MONDIES, M.; PUJOL, B., 1978. Influence de rêgulateurs de croissance (B9 et CCC) sur le dêveloppment et la fructification de cultures de soja (Glycine max L. Merrill) placees dans differentes conditions d'alimentation hydrique et de competition intraspecifique. Comp. Rend. Hebd. Seanc. Acad. Sci. 286: 1673 1676.

[3] CHAILAKHYAN, M.Kh. ; ARUTYUNYAN, R. Sh. ; STEPANYAN, M.D.; KARAPETYAN, N.A., 1973. Effect of the growth retardant CCC on the growth of leguminous plants and nodule formation under different methods of application. Doklady Akademii Nauk Armyanskoi 56: 182-187.

[4] GOWDA, P.M., 1972. Effects of certain cultural and chemical treatments on growth, productivity and seed composition of edible soybeans, Glycine max (L.) Merrill. Diss. Abstr. Intern. 33: 516.

[5] HOWELL, R.W., 1963. Physiology of the soybean. In: The soy bean, A.G. Norman, ed. Academic Press, New York, 75-124.

[6] LAM-SANCHEZ, A.; BARRETO, M.; PITELLI, R.A., 1975. Efeitos do CCC (cloreto de 2-cloro etil trimetil amonio) na cultura da soja. Científica 3: 48-54.

[7] MITROVIC, A.; PAVLICIC, J., 1959. The application of gibberellin on cultivated plants. The effect of gibberellin on the growth and development of soybean and lespedeza. Arhiv. Polj. Nauke 12: 22-34.

[8] OUNSWORTH, L.F.; PILLAY, D.T.N., 1969. Response of soybeans to gibberellic acid and succinic acid 2,2-dimethyl hydrazide (Alar) at different levels of nitrogen, phosphorus and potassium. Phyton 26: 207-212.

[9] PILLAY, D.T.N., 1965. Responses of soybean seedlings to N -dimethylaminosuccinamic acid, a growth retardant. Can. J. Bot. 43: 1477-1478.

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