Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-25T05:50:36.710Z Has data issue: false hasContentIssue false
  • English
  • Français

Germination of False Broomweed (Ericameria austrotexana) Seed

Published online by Cambridge University Press:  12 June 2017

H. S. Mayeux Jr.
H. S. Mayeux Jr.*
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Grassland, Soil and Water Res. Lab., Temple, TX 76503
Get access Rights & Permissions [Opens in a new window]

Abstract

Within 1 yr of collection, 60% or more of false broomweed (Ericameria austrotexana M. C. Johnst.) seed germinated at continuous temperatures from 15 to 30C if light was provided for 8 h daily. Maximum radicle elongation and fresh weight of 14-day-old seedlings occurred at 25 and 30C. Alternating temperatures did not enhance germination, and germination was suppressed in the dark. Germination, time required for germination, and early seedling vigor were tolerant of CaCl2 and MgCl2 solutions at concentrations as high as 200 mM, but NaCl reduced germination at concentrations in excess of 100 mM. Germination was sensitive to polyethylene glycol solution osmotic potentials of 0.6 mPa or more. Reduced germination in salt solutions was attributed to an osmotic effect rather than a direct effect of ions. Other than an inability to germinate when soil water is limited, no narrow environmental requirements appear to restrict establishment of this undesirable rangeland shrub.

Keywords

Rangeland weedsradicle lengthseedling fresh weight
Type
Research Article
Information
Weed Science , Volume 30 , Issue 6 , November 1982 , pp. 597 - 601
Copyright
Copyright © 1982 by the 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. Correll, Donovan and Johnston, M. C. 1979. Manual of the Vascular Plants of Texas. Univ. of Texas at Dallas. 1881 pp.Google Scholar
2. Grime, J. P. 1979. Plant Strategies and Vegetation Processes. John Wiley & Sons, New York. 222 pp.Google Scholar
3. Hyder, S. Z. and Yasmin, S. 1972. Salt tolerance and cation interaction in alkali sacaton at germination. J. Range Manage. 25:390–392.Google Scholar
4. Mayeux, H. S. Jr. and Leotta, L. 1981. Germination of broom snakeweed (Gutierrezia sarothrae) and threadleaf snakeweed (G. microcephalum) seed. Weed Sci. 29:530–534.CrossRefGoogle Scholar
5. Mayeux, H. S. Jr. and Scifres, C. J. 1978. Germination of goldenweed seed. J. Range Manage. 31:371–374.Google Scholar
6. Mayeux, H. S. Jr. and Scifres, C. J. 1979. Vegetative growth and mortality of Drummond's goldenweed (Isocoma Drummondii (T.&G.] Greene: Compositae) as influenced by soil moisture and site characteristics. Southwest. Nat. 24:97–114.Google Scholar
7. Mayeux, H. S. Jr., Scifres, C. J., and Crane, R. A. 1980. Ericameria austrotexana and associated range forage response to herbicides. Weed Sci. 28:602–606.Google Scholar
8. Monahar, M. S. 1966. Effects of “osmotic” systems on germination of peas (Pisum sativum L.). Planta 71:81–86.Google Scholar
9. Parmar, M. T. and Moore, R. P. 1966. Effect of simulated drought by polyethylene glycol solutions on corn (Zea mays L.) germination and seedling development. Agron. J. 58:391–392.Google Scholar
10. Richards, L. A. (ed.). 1954. Diagnosis and improvement of saline and alkaline soils. U.S. Dep. Agric., Agric. Handb. No. 64. Washington, DC. 160 pp.Google Scholar
11. Ryan, J., Miyamoto, S., and Stroehlein, J. L. 1975. Salt and specific ion effects on germination of four grasses. J. Range Manage. 28:61–64.CrossRefGoogle Scholar
12. Uhvits, R. 1946. Effects of osmotic pressure on water absorption and germination of alfalfa seed. Am. J. Bot. 33:278–285.Google Scholar