Comparative effects of gibberellins and an N-substituted phthalimide on seed germination and extension growth of celery (Apium graveolens L.)

Abstract

The N-substituted phthalimide AC 94377 (1-(3-chlorophthalimido)-cyclohexanecarboxamide) was equally effective as a mixture of the gibberellins A4 and A7 (GA4/7) in breaking dormancy and stimulating germination of celery seeds when either was used in combination with ethephon or daminozide as a seed soak. Whereas seedlings emerging from GA4/7-treated seeds became etiolated in comparison with those from untreated seeds, those from AC 94377-treated seeds showed normal development. Preharvest sprays of gibberellic acid (GA3) increased the height of mature plants in comparison with untreated controls by about 16 per cent whereas AC 94377 was ineffective. The yield from GA3-treated plots was about 10 per cent greater than that from AC 94377-treated plots.

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References

  1. 1.

    Palevitch D and Thomas TH (1974) Thermodormancy release of celery seed by gibberellins, 6-benzylaminopurine and ethephon applied in organic solvents by dry seeds. J Expt Bot 25:981–986

    Google Scholar 

  2. 2.

    Suttle JC (1983) N-substituted phthalimides as plant bioregulants. News Bull Br Plant Growth Regulator Group 6 (2):11–19

    Google Scholar 

  3. 3.

    Thomas TH (1984) Gibberellin-like stimulation of celery (Apium graveolens L.) see germination by N-substituted phthalimides. Scientia Hortic 23:113–117

    Google Scholar 

  4. 4.

    Thomas TH and Whitlock AJ (1980a) Direct sowing the next step. The Grower 93 Suppl:41–44

    Google Scholar 

  5. 5.

    Thomas TH and Whitlock AJ (1980b) GA's other role-yield booster. The Grower 93 Suppl: 42

    Google Scholar 

  6. 6.

    Thomas TH, Biddington NL and Palevitch D (1978) Improving the performance of pelleted celery seeds with growth regulator treatments. Acta Hortic 83:235–243

    Google Scholar 

  7. 7.

    Thomas TH, Palevitch D, Biddington NL and Austin RB (1975) Growth regulators and the phytochrome-mediated dormancy of celery seeds. Physiol Plant 35:101–106

    Google Scholar 

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Gott, K.A., Thomas, T.H. Comparative effects of gibberellins and an N-substituted phthalimide on seed germination and extension growth of celery (Apium graveolens L.). Plant Growth Regul 4, 273–279 (1986). https://doi.org/10.1007/BF00028170

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Key words

  • Apium graveolens L.
  • Cladosporium spp.
  • extension growth
  • gibberellins
  • phthalimides
  • seed germination