Skip to main content
NCBI home page
Plant Physiology logoLink to Plant Physiology
. 1981 Jul;68(1):175–179. doi: 10.1104/pp.68.1.175

Phase-Sequence of Redroot Pigweed Seed Germination Responses to Ethylene and Other Stimuli 1

Mark W Schonbeck 1, G H Egley 1
PMCID: PMC425911  PMID: 16661865

Abstract

Phase-sequence studies showed that light, ethylene, and high temperature each enhanced germination of redroot pigweed (Amaranthus retroflexus L.) seeds when given during the first 24 hours of seed imbibition. Responses were maximal during the first 12 hours. After 48 hours all three stimuli given together caused 75% germination but each alone was ineffective. The main influence of water potential on seed germination occurred at about 24 hours, but the influence of CO2 extended into the second and third days. Germination was reduced by water stress (−4 bars) or CO2-free air, but ethylene reversed the reduction even when administered after several days incubation. This suggested that environmental and hormonal factors affected redroot pigweed seeds at two distinct stages in the sequence of germination events.

Full text

PDF
175

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Abeles F. B., Lonski J. Stimulation of lettuce seed germination by ethylene. Plant Physiol. 1969 Feb;44(2):277–280. doi: 10.1104/pp.44.2.277. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Chen C. Y., Ikuma H. Photocontrol of the germination of onoclea spores: v. Analysis of germination processes by means of temperature. Plant Physiol. 1979 Apr;63(4):704–708. doi: 10.1104/pp.63.4.704. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Esashi Y., Leopold A. C. Physical forces in dormancy and germination of xanthium seeds. Plant Physiol. 1968 Jun;43(6):871–876. doi: 10.1104/pp.43.6.871. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Esashi Y., Tsukada Y. Thermoperiodism in cocklebur seed germination. Plant Physiol. 1978 Mar;61(3):437–441. doi: 10.1104/pp.61.3.437. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Ketring D. L., Morgan P. W. Physiology of Oil Seeds: II. Dormancy Release in Virginia-type Peanut Seeds by Plant Growth Regulators. Plant Physiol. 1971 Apr;47(4):488–492. doi: 10.1104/pp.47.4.488. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Negm F. B., Smith O. E. Effects of ethylene and carbon dioxide on the germination of osmotically inhibited lettuce seed. Plant Physiol. 1978 Oct;62(4):473–476. doi: 10.1104/pp.62.4.473. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES