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Seed Germination and Seedling Emergence of Jointed Goatgrass (Aegilops cylindrica)

Published online by Cambridge University Press:  12 June 2017

Larry A. Morrow ,
Frank L. Young  and
Duane G. Flom
Larry A. Morrow
Affiliation:
U.S. Dep. Agric., Pullman, WA 99164
Frank L. Young
Affiliation:
U.S. Dep. Agric., Pullman, WA 99164
Duane G. Flom
Affiliation:
Dep. Agron. and Soils, Washington State Univ., Pullman, WA 99164
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Abstract

Germination of jointed goatgrass (Aegilops cylindrica Host.) seed in nitrate nitrogen (NO−3-N), gibberellic acid (GA3), or distilled water was studied in the laboratory, and depth of emergence of seedlings from soil was studied in the greenhouse and laboratory. After 14 days in germination chambers in distilled water, no difference in percent germination of 1-yr-old or freshly harvested seed existed between 10, 15, or 20 C. Jointed goatgrass seed germinated at temperatures ranging from 10 to 35 C and responded to temperature more than to NO−3-N. Seedlings did not emerge from below 5 cm in greenhouse and 6 cm in laboratory studies even though germination occurred. Jointed goatgrass has the seed germination and seedling emergence characteristics to develop into a severe annual grass weed in winter wheat (Triticum aestivum L.)-producing regions, particularly where reduced-tillage practices are utilized.

Keywords

Triticum cylindricumT. aestivumannual grass weed
Type
Research Article
Information
Weed Science , Volume 30 , Issue 4 , July 1982 , pp. 395 - 398
Copyright
Copyright © 1982 by the Weed Science Society of America 

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References

Literature Cited

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