Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-12T20:31:18.412Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of Light and Temperature on the Germination and Seedbed Ecology of Common Mullein (Verbascum thapsus)

Published online by Cambridge University Press:  12 June 2017

R. J. Semenza ,
J. A. Young  and
R. A. Evans
R. J. Semenza
Affiliation:
Sci. Ed. Admin., U.S. Dep. Agric., Renewable Res. Center, Univ. of Nevada, 920 Valley Road, NV 89512
J. A. Young
Affiliation:
Sci. Ed. Admin., U.S. Dep. Agric., Renewable Res. Center, Univ. of Nevada, 920 Valley Road, NV 89512
R. A. Evans
Affiliation:
Sci. Ed. Admin., U.S. Dep. Agric., Renewable Res. Center, Univ. of Nevada, 920 Valley Road, NV 89512
Get access Rights & Permissions [Opens in a new window]

Abstract

Germination of common mullein (Verbascum thapsus L.) in relation to constant and alternating temperatures, and light quality and duration was studied. In the dark, optimum germination occurred with 8-h warm periods of 30 to 40 C alternating with 16-h cold periods of 15 to 35 C. In the dark, no germination occurred below 10 C. With light during the 8-h warm periods, germination occurred at temperatures from 2 to 40 C, alternating with 0 C cold periods. The range of optimum temperatures for germination was also greatly expanded with light. Exposures to 24-h periods of red light, followed by incubation in the dark, produced the same germination response as 8 h of white light daily. Common mullein seeds germinated on the surface of the soil even though the seeds did not have mucilage.

Keywords

Germinationtemperaturelight qualityroadside weed control
Type
Research Article
Information
Weed Science , Volume 26 , Issue 6 , November 1978 , pp. 577 - 581
Copyright
Copyright © 1978 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. Evans, R. A. and Young, J. A. 1970. Plant litter and establishment of alien annual species in rangeland communities. Weed Sci. 18:697–703.CrossRefGoogle Scholar
2. Evans, R. A. and Young, J. A. 1972. Microsite requirements for establishment of annual rangeland weeds. Weed Sci. 20:350–356.Google Scholar
3. Evans, R. A. and Young, J. A. 1972. Germination and establishment of Salsola in relation to seedbed environment. Part II. Seed distribution and seedling growth of Salsola and microenvironmental monitoring of the seedbed. Agron. J. 64:219–224.Google Scholar
4. Evans, R. A., Kay, B. L., and Young, J. A. 1975. Microenvironment of a dynamic annual community in relation to range improvement. Hilgardia 43:79–102.Google Scholar
5. Hooker, J. D. 1904. The British Flora. 8th Edition. L. Reeve and Co., Convent Garden, United Kingdom. 584 pp.Google Scholar
6. Neithammer, A. 1928. Fortlanfende untersuchagen uberden chemismus der Angiospermen samen und dir Ausseren naturlichen wie Kunstlichen Kimungsfakteren. III Oberflaohenaktive Substanzen. Biochem. Z. 16:267–350.Google Scholar
7. Toole, E. H., Hendricks, S. B., Borthwick, H. A., and Toole, V. K. 1956. Physiology of Seed Germination. Annu. Rev. Plant Physiol. 7:299–324.Google Scholar
8. Toole, E. H., Toole, V. K., Borthwick, H. A., and Hendricks, S. B. 1955. Interaction of temperature and light in germination of seeds. Plant Physiol. 30:473–478.CrossRefGoogle ScholarPubMed
9. Young, J. A. and Evans, R. A. 1972. Germination and establishment of Salsola in relation to seedbed environment. Part I. Temperature, afterripening, and moisture relations of Salsola seeds as determined by laboratory studies. Agron. J. 64:214–218.Google Scholar
10. Young, J. A. and Evans, R. A. 1973. Mucilaginous seed coats. Weed Sci. 21:52–54.Google Scholar
11. Young, J. A., Evans, R. A., and Kay, B. L. 1971. Germination of annual grasses in simulated litter. Agron. J. 63:551–555.Google Scholar
12. Young, J. A., Evans, R. A., and Kay, B. L. 1973. Temperature requirements for seed germination in an annual-type rangeland community. Agron. J. 65:656–659.Google Scholar
13. Young, J. A., Evans, R. A., and Kay, B. L. 1975. Dispersal and germination dynamics of broadleaf filaree [Erodium botrys(Cav.) Bertol.]. Agron. J. 67:54–57.CrossRefGoogle Scholar