Abstract
The temperature-dependent, primary dormancy of cv. Florida 683 celery seeds in darkness was partially broken by a 30 min light exposure on the third day of incubation at 20–22°C, resulting in c 50 percent germination after 20 days. This light stimulation was negated by including different inhibitors of gibberellin biosynthesis in the incubation medium. Subsequent addition of a solution of the gibberellins A4 and A7 or of the gibberellin-active compound (1-3-chlorophthalimido)-cyclohexane carboxamide (AC94,377) overcame the inhibitory effects on germination of these GA-biosynthesis inhibitors. It is suggested that light stimulates the biosynthesis of gibberellins which are essential for dormancy-break in celery seeds and that this biosynthesis is either directly or indirectly controlled through phytochrome.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Abbreviations
- AC94,377:
-
1-(3-chlorophthalimido)-cyclohexane carboxamide; ancymidol, α-cyclopropyl-α-(4-methoxyphenyl)-5-pyrimidinemethanol
- AMO1618:
-
N,N,N-2-tetramethyl-5-(1-methyl ethyl)-4-(1-piperidinylcarbonyl)oxy-benzenaminium chloride
- BTS44584:
-
S-2,5-dimethyl-4-pentamethylenecarbamoyloxyphenyl-SS-dimethyl sulphonium
- P:
-
toluenesulphonate; chlormequat chloride, 2-chloroethyltrimethylammonium chloride; daminozide
- N:
-
dimethylaminoscuccinamic acid; paclobutrazol, (2RS, 3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl pentan-3-ol)
References
Dalziel J and Lawrence DK (1984) Biochemical and biological effects of kaurene oxidase inhibitors such as paclobutrazol. In: R Menhennet and DK lawrence, eds. Biochemical Aspects of Synthetic and Naturally Occurring Plant Growth Regulators, pp 43–58. Oxford: BPGRG Monograph 11.
Gott KA and Thomas TH (1986) Comparative effects of gibberellins and an N-substituted phthalimide on seed germination and extension growth of celery (Apium graveolens L.). Plant Growth Regulation 4: 273–279.
Karssen CM and Groot SPC (1987) The hormone balance theory of dormancy evaluated. In: NJ Pinfield and M Black, eds. Growth Regulators and Seeds, pp 17–30. Oxford: BPGRG Monograph 15.
Lurssen K (1987) The use of inihibitors of gibberellin and sterol biosynthesis to probe hormone action. In: GVHoad, JRLenton, MBJackson and RKAtkin, eds. Hormone Action in Plant Development: A Critical Appraisal, pp 133–144. London: Butterworth and Co.
Thomas TH and Sambrooks DF (1985) Possible control of gibberellin-induced release of temperature-dependent primary dormancy in seeds of celery (Apium graveolens L.) by transmembrane ion fluxes. Plant Growth Regulation 2: 191–199.
Thomas TH, Biddington NL and Palevitch D (1978) The role of cytokinins in the phytochrome-mediated germination of dormant, imbibed celery (Apium graveolens L.) seeds. Photochem Photobiol 27: 231–236.
Thomas TH, Dearman AS and Biddington NL (1986) Evidence for the accumulation of a germination inhibitor during progressive thermoinhibition of seeds of celery (Apium graveolens L.). Plant Growth Regulation 4; 177–184.
Thomas TH, Biddington NL, O'Toole DF and Hallan V (1979) Hormonal control of seed germination. Report of the National Vegetable Research Station for 1978, pp 93–94.
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.
Williams PM, Bradbeer JW, Gaskin P and McMillan J (1974) Studies in seed dormancy 8: the identification and determination of gibberellins A1 and A9 in seeds of Corylus avellans L. Planta 117: 101–108.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Thomas, T.H. Gibberellin involvement in dormancy-break and germination of seeds of celery (Apium graveolens L.). Plant Growth Regul 8, 255–261 (1989). https://doi.org/10.1007/BF00025395
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00025395