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Efeitos de giberelinas na morfologia produtividade do feijoeiro (Phaseolus vulgaris L. cv. 'Carioca')

Effects of gibberellins on morphology and productivity of bean (Phaseolus vulgaris L. cv. 'Carioca')

Resumos

Verificou-se os efeitos de giberelinas, quando aplicadas sob a forma de pulverização das plântulas, na morfologia, florescimento e produtividade do feijoeiro cultivar 'Carioca'; em condições de casa de vegetação. Estudou-se as concentrações de 0, 50, 500 e 1000 ppm do regulador de crescimento; sendo que os tratamentos com 500 e 50 ppm do produto revelaram-se mais efetivos. As aplicações de giberelinas promoveram aumentos significativos no comprimento da haste principal e dos meritalos. Verificou-se um ligeiro incremento no número de meritalos e no número de folhas nas plantas tratadas com o regulador de crescimento. Os tratamentos com giberelinas promoveram maior florescimento; não observou-se porém, diferenças significativas entre a produtividade das plantas tratadas, com relação ao controle.


Seedlings of (Phaseolus vulgaris L. cv 'Carioca') were treated, 7 days after germination, with gibberellins in the concentrations of 50, 500 and 1000 ppm and the check treatment, to verify the affect of the gibberellins on the morphology and productivity of the bean plant. The experiment was made under greenhouse conditions during year of 1972. The most effective treatment with the gibberellins were obtained with the concentrations of 500 and 50 ppm and excepting with the concentration of 500 ppm in which one a negative result was related with the length of leaves. There was an affective increase of elongation in the stem of the plants treated with the gibberellins. Significant differences related to the length of the internodes occurred during the first thirty-one days of growth and no significant differences were obtained after that period in the plants with gibberellins. It was also verified in all treated plants there was a little increase in the number of internodes and in the number of leaves. According with the number of flowers it was noted there was a tendency to increase the number of them at the concentrations of 500 and 50 ppm of gibberellins, however the production of the beans was not significant.


Paulo R. C. CastroI; Eliana C BergebíannII

IDepartamento de Botânica. E.S.A. "Luiz de Queiroz" — U.S.P

IIEngenheiro-Agrônomo. C. A. T. I. — SECRETARIA DA AGRICULTURA

RESUMO

Verificou-se os efeitos de giberelinas, quando aplicadas sob a forma de pulverização das plântulas, na morfologia, florescimento e produtividade do feijoeiro cultivar 'Carioca'; em condições de casa de vegetação.

Estudou-se as concentrações de 0, 50, 500 e 1000 ppm do regulador de crescimento; sendo que os tratamentos com 500 e 50 ppm do produto revelaram-se mais efetivos. As aplicações de giberelinas promoveram aumentos significativos no comprimento da haste principal e dos meritalos.

Verificou-se um ligeiro incremento no número de meritalos e no número de folhas nas plantas tratadas com o regulador de crescimento. Os tratamentos com giberelinas promoveram maior florescimento; não observou-se porém, diferenças significativas entre a produtividade das plantas tratadas, com relação ao controle.

SUMMARY

Seedlings of (Phaseolus vulgaris L. cv 'Carioca') were treated, 7 days after germination, with gibberellins in the concentrations of 50, 500 and 1000 ppm and the check treatment, to verify the affect of the gibberellins on the morphology and productivity of the bean plant. The experiment was made under greenhouse conditions during year of 1972.

The most effective treatment with the gibberellins were obtained with the concentrations of 500 and 50 ppm and excepting with the concentration of 500 ppm in which one a negative result was related with the length of leaves.

There was an affective increase of elongation in the stem of the plants treated with the gibberellins. Significant differences related to the length of the internodes occurred during the first thirty-one days of growth and no significant differences were obtained after that period in the plants with gibberellins.

It was also verified in all treated plants there was a little increase in the number of internodes and in the number of leaves.

According with the number of flowers it was noted there was a tendency to increase the number of them at the concentrations of 500 and 50 ppm of gibberellins, however the production of the beans was not significant.

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LITERATURA CITADA

ALVIM, P. T. 1960 — Net assimilation rate and growth behaviour of beans as affected by gibberellic acid, urea and sugar sprays. Plant. Physiol. 35 (3): 285-288.

CHIN, T. Y. & J. A. LOcKHART 1965 — Translocation of applied gibberellin in bean seedlings. Amer. J. Bot. 52 (8): 828-833.

CROSS, B. E. 1954 — Gibberellic acid. I. J. Chem. Soc. 4670-4676.

CROSS, B. E., J. F. GROVE, P. McCLOSKEY, J. McMILLAN, J. S. MOFFATT & T. P. C. MULHOLLAND 1961 — The structures of the fungal gibberellins. Advan. Chem. Serv. 28: 3-17.

GALSTON, A. W. & P. J. DAVIES 1970 — Control Mechanisms in Plant Development. Prentice-Hall, Inc. New Jersey, U. S. A. 184 pp.

KURAISHI, S. & T. HASHIMOTO 1957 — Promotion of leaf growth and acceleration of stem elongation by gibberellin. Bot. Mag. Tokyo 70: 86-92.

KUROSAWA, E. 1926 — Experimental studies on the secretion of Fusarium heterosporum on rice plants. Trans. Nat. Hist. Soc. Formosa 16: 213-227·

LESHEM, Y. & D. KOLLER 1966 — The control of flowering in the strawberry Fragaria ananassa Duch. II. The role of gibberellins. Ann. Bot. 30 (120): 587-595.

LESHEM, Y. & S. STEINER 1968 — Effect of gibberellic acid and cold treatment on flower differentiation and stem elongation of cauliflower (Brassica oleraceae var. botrytis). Israel J. Agric. Res. 18(3): 133-134.

MOH, C. C. & J. J. ALAN 1967 — The response of a radiation — induced dwarf bean mutant to gibberellic acid. Turrialba 17 (2): 176-178. RUDDAT, M. 1969 — Biosynthesis and metabolism of steviol. In Biochemistry and Physiology of Plant Growth Substances. Ed. F. Wightman & G. Setterfield. Runge Press. Otawa pp. 341-346.

SALISBURY, F. B. & C. ROSS 1969 — Plant Physiology. Wadswort Publishing Company, Inc. California U.S.A. 747 pp.

WEST, C. A., M. OSTER, D. ROBINSON, F. LEW & P. MURPHY 1969 — Biosynthesis of gibberellin precursors and related diterpene. In Biochemistry and siology of Plant Growth Substances. Ed. F. Wightman & G. Setterfield. Runge Press. Otawa pp. 313-332.

WITTWER, S. H. & M. J. BUKOVAC 1957 — Gibberellin and higher plants: X Field observations with certain vegetable crops. Mich. Agr. Expt. Sta. Quart. Bull. 40: 352-364.

YABUTA, T. 1935 — Biochemistry of the "bakanae" fungus of rice. Agr. Hort. Tokyo 10: 17-22.

Entregue para publicação em 26/3/1973.

  • ALVIM, P. T. 1960 Net assimilation rate and growth behaviour of beans as affected by gibberellic acid, urea and sugar sprays. Plant. Physiol. 35 (3): 285-288.
  • CHIN, T. Y. & J. A. LOcKHART 1965 Translocation of applied gibberellin in bean seedlings. Amer. J. Bot. 52 (8): 828-833.
  • CROSS, B. E. 1954 Gibberellic acid. I. J. Chem. Soc. 4670-4676.
  • CROSS, B. E., J. F. GROVE, P. McCLOSKEY, J. McMILLAN, J. S. MOFFATT & T. P. C. MULHOLLAND 1961 The structures of the fungal gibberellins. Advan. Chem. Serv. 28: 3-17.
  • GALSTON, A. W. & P. J. DAVIES 1970 Control Mechanisms in Plant Development. Prentice-Hall, Inc. New Jersey, U. S. A. 184 pp.
  • KURAISHI, S. & T. HASHIMOTO 1957 Promotion of leaf growth and acceleration of stem elongation by gibberellin. Bot. Mag. Tokyo 70: 86-92.
  • KUROSAWA, E. 1926 Experimental studies on the secretion of Fusarium heterosporum on rice plants. Trans. Nat. Hist. Soc. Formosa 16: 213-227·
  • LESHEM, Y. & D. KOLLER 1966 The control of flowering in the strawberry Fragaria ananassa Duch. II. The role of gibberellins. Ann. Bot. 30 (120): 587-595.
  • LESHEM, Y. & S. STEINER 1968 Effect of gibberellic acid and cold treatment on flower differentiation and stem elongation of cauliflower (Brassica oleraceae var. botrytis). Israel J. Agric. Res. 18(3): 133-134.
  • MOH, C. C. & J. J. ALAN 1967 The response of a radiation induced dwarf bean mutant to gibberellic acid. Turrialba 17 (2): 176-178.
  • RUDDAT, M. 1969 Biosynthesis and metabolism of steviol. In Biochemistry and Physiology of Plant Growth Substances. Ed. F. Wightman & G. Setterfield. Runge Press. Otawa pp. 341-346.
  • SALISBURY, F. B. & C. ROSS 1969 Plant Physiology. Wadswort Publishing Company, Inc. California U.S.A. 747 pp.
  • WEST, C. A., M. OSTER, D. ROBINSON, F. LEW & P. MURPHY 1969 Biosynthesis of gibberellin precursors and related diterpene. In Biochemistry and siology of Plant Growth Substances. Ed. F. Wightman & G. Setterfield. Runge Press. Otawa pp. 313-332.
  • WITTWER, S. H. & M. J. BUKOVAC 1957 Gibberellin and higher plants: X Field observations with certain vegetable crops. Mich. Agr. Expt. Sta. Quart. Bull. 40: 352-364.
  • YABUTA, T. 1935 Biochemistry of the "bakanae" fungus of rice. Agr. Hort. Tokyo 10: 17-22.
  • Efeitos de giberelinas na morfologia produtividade do feijoeiro (Phaseolus vulgaris L. cv. 'Carioca')

    Effects of gibberellins on morphology and productivity of bean (Phaseolus vulgaris L. cv. 'Carioca')
  • Datas de Publicação

    • Publicação nesta coleção
      29 Maio 2012
    • Data do Fascículo
      1973

    Histórico

    • Recebido
      26 Mar 1973
    Universidade de São Paulo, Escola Superior de Agricultura Av.Páduas Dias, 11, C.P 9 / Piracicaba - São Paulo, Brasil, tel. (019)3429-4486, (019)3429-4401 - Piracicaba - SP - Brazil
    E-mail: scientia@esalq.usp.br