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Germination of Seeds of Perennial Pepperweed (Lepidium latifolium)

Published online by Cambridge University Press:  12 June 2017

Gerald K. Miller ,
James A. Young  and
Raymond A. Evans
Gerald K. Miller
Affiliation:
Div. Range, Forestry, and Wildlife, Univ. Nevada
James A. Young
Affiliation:
Agric. Res. Serv., U. S. Dep. Agric., Reno, NV 89512
Raymond A. Evans
Affiliation:
Agric. Res. Serv., U. S. Dep. Agric., Reno, NV 89512
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Abstract

Perennial pepperweed (Lepidium latifolium L. # LEPLA) is a serious weed of meadows and riparian habitats in the intermountain area of the western United States. Germination of seeds of this species was tested at 55 constant- and alternating-temperature regimes. No significant differences were found in mean germination at a range of temperatures varying from 0 to 40 C for seedlots collected at the same site in different years or at different locations in the same year. Optimum germination not significantly (P = 0.01) lower than the maximum observed occurred most frequently at 5/40 C (5 C for 16 h and 40 C for 8 h), and 10/40 and 15/40 C. Germination was enhanced by alternating regimes with low night temperatures (0, 2, or 5 C) and high day temperatures (35 and 40 C), in comparison with more moderate constant-temperature regimes.

Keywords

Seedbed ecologyriparian habitatsLEPLA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 34 , Issue 2 , March 1986 , pp. 252 - 255
Copyright
Copyright © 1986 by the Weed Science Society of America 

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References

Literature Cited

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