Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-22T19:57:23.015Z Has data issue: false hasContentIssue false

Hormonal Aspects of Seed Dormancy in Yellow Foxtail

Published online by Cambridge University Press:  12 June 2017

G. E. Kollman
Affiliation:
Dep. of Bot. and Plant Pathol., Iowa State Univ., Ames, Iowa 50010
D. W. Staniforth
Affiliation:
Dep. of Bot. and Plant Pathol., Iowa State Univ., Ames, Iowa 50010

Abstract

Investigations with exogenous test solutions showed that abscisic acid (ABA) inhibited germination of nondormant seeds and that gibberellins (GA) promoted the germination of yellow foxtail (Setaria lutescens (Weigel) Hubb.) The effect of the promoters was much more readily demonstrated with excised caryopses than with intact seeds. Cytokinins reversed ABA inhibition of germination; GA did not, but the two promoters in combination were more effective than the cytokinin alone. The reversal occurred only at one end of the embryonic axis, the shoot end. An endogenous inhibitor was extracted from dormant and nondormant yellow foxtail seeds and compared with ABA by chromatography, electrophoresis, and bioassays. The extracted inhibitor was very similar to ABA in six paper-chromatography solvent systems, three paper electrophoresis runs at different pH values, and three bioassays. Paper electrophoresis was an effective means of separating the two plant hormones, ABA and gibberellic acid (GA3).

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Amen, R. D. 1968. A model of seed dormancy. Bot. Rev. 34:131.CrossRefGoogle Scholar
2. Black, M. 1970. Seed germination and dormancy. Sci. Progr. 58:379394.Google Scholar
3. Chrispells, M. J. and Varner, J. E. 1967. Gibberellic acidenhanced synthesis and release of α-amylase and ribonuclease by isolated barley aleurone layers. Plant Physiol. 42:398406.Google Scholar
4. Dey, B. and Sircar, S. M. 1968. The presence of an abscisic acid like factor in nonviable rice seeds. Physiol. Plant. 21:10541059.CrossRefGoogle Scholar
5. Frankland, B. 1961. Effect of gibberellic acid, kinetin, and other substances on seed dormancy. Nature 192:678679.CrossRefGoogle Scholar
6. Jackson, G. A. D. 1968. Hormonal control of fruit development, seed dormancy and germination with particular reference to Rosa. p. 127156. In Plant growth regulators, Soc. Chem. Ind. (London) Monogr. No. 31.Google Scholar
7. Junttila, O. 1970. Effects of stratification, gibberellic acid and germination temperature on the germination of Betula nana . Physiol. Plant. 23:425433.Google Scholar
8. Kallio, P. and Piroinen, P. 1959. Effect of gibberellin on the termination of dormancy in some seeds. Nature 183: 18301831.Google Scholar
9. Karssen, C. M. 1968. The light promoted germination of the seeds of Chenopodium album L.: II. Effects of (RS)-abscisic acid. Acta Bot. Neer. 17:293308.CrossRefGoogle Scholar
10. Khan, A. A. 1967. Antagonism between cytokinins and germination inhibitors. Nature 216:166167.CrossRefGoogle Scholar
11. Khan, A. A. 1968. Inhibition of gibberellic acid-induced germination by abscisic acid and reversal by cytokinins. Plant Physiol. 43:14631465.CrossRefGoogle ScholarPubMed
12. Khan, A. A. 1971. Cytokinins: permissive role in seed germination. Science 171:853859.CrossRefGoogle ScholarPubMed
13. Lipe, W. N. and Crane, J. C. 1966. Dormancy regulation in peach seeds. Science 153:541542.Google Scholar
14. Martin, G. C., Mason, M. I. R., and Forde, H. I. 1969. Changes in endogenous growth substances in the embryos of Juglana regia during stratification. J. Amer. Soc. Hort. Sci. 94:1317.Google Scholar
15. Milborrow, B. V. 1967. The identification of (+)-abscisin II [(+)-dormin] in plants and measurement of its concentrations. Planta 76:93113.CrossRefGoogle ScholarPubMed
16. Miyamoto, T., Tolbert, N. E., and Everson, E. H. 1961. Germination inhibitors related to dormancy in wheat seeds. Plant Physiol. 36:739746.Google Scholar
17. Naylor, J. and Simpson, G. M. 1961. Dormancy studies in seed of Avena fatua. 2. A gibberellin-sensitive inhibitory mechanism in the embryo. Can. J. Bot. 39:281295.CrossRefGoogle Scholar
18. Ross, T. D. and Bradbeer, J. W. 1971. Studies in seed dormancy. V. The content of endogenous gibberellins in seeds of Corylus avellana L. Planta 100:288302.CrossRefGoogle ScholarPubMed
19. Rudnicki, R. 1969. Studies on abscisic acid in apple seeds. Planta 86:6368.CrossRefGoogle ScholarPubMed
20. Sankhla, N. and Sankhla, D. 1968. Reversal of (±)-abscisin II induced inhibition of lettuce seed germination and seedling growth by kinetin. Physiol. Plant. 21:190195.CrossRefGoogle Scholar
21. Sankhla, N. and Sankhla, D. 1968. Interaction between growth and (±)-abscisin II in seed germination. Z. Pflanzenphysiol. 58:402409.Google Scholar
22. Sondheimer, E. D., Tzou, S., and Galson, E. C. 1968. Abscisic acid levels and seed dormancy. Plant Physiol. 43: 14431447.CrossRefGoogle ScholarPubMed
23. Sumner, D. C. and Lyon, J. L. 1967. Effects on (±) abscisin II on seed germination in four species of grasses. Planta 75:2832.Google Scholar
24. Tager, J. M. and Clarke, B. 1961. Replacement of an alternation temperature requirement for germination by gibberellic acid. Nature 192:8384.CrossRefGoogle Scholar
25. Thompson, P. A. 1969. Germination of species of Labiatae in response to gibberellins. Physiol. Plant. 22:575586.CrossRefGoogle Scholar
26. Timson, J. 1965. New method of recording germination data. Nature 207:216217.Google Scholar
27. Wareing, P. F., Good, J., Potter, H., and Pearson, A. 1968. Preliminary studies on the mode of action of abscisic acid. p. 191207. In Plant Growth Regulators, Soc. Chem. Ind. (London) Monogr. No. 31.Google Scholar
28. Wareing, P. F. and Saunders, P. F. 1971. Hormones and dormancy. Annu. Rev. Plant Physiol. 22:261288.Google Scholar
29. West, W. C., Frattarelli, F. J., and Russin, K. J. 1970. Effect of stratification and gibberellin on seed germination in Ginkgo biloba . Bull. Torrey Bot. Club 97:380384.Google Scholar
30. Wurzburger, J. and Lesheml, Y. 1969. Physiological action of the germination inhibitor in the husk of Aegilops kolchyi Boiss. New Phytol. 68:337341.CrossRefGoogle Scholar