Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-27T20:47:56.200Z Has data issue: false hasContentIssue false
  • English
  • Français

Germination, and Seedling and Rosette Development of Flodman Thistle (Cirsium flodmanii)

Published online by Cambridge University Press:  12 June 2017

Robert G. Wilson  and
Melvin K. McCarty
Robert G. Wilson
Affiliation:
Dep. Agron. and Res. Agron., Agric. Res. Serv., U.S. Dep. Agric. Univ. of Nebraska, Scottsbluff and Lincoln NE 69361 and 68583
Melvin K. McCarty
Affiliation:
Dep. Agron. and Res. Agron., Agric. Res. Serv., U.S. Dep. Agric. Univ. of Nebraska, Scottsbluff and Lincoln NE 69361 and 68583
Get access Rights & Permissions [Opens in a new window]

Abstract

Maximum germination of flodman thistle [Cirsium flodmanii (Rydb.) Arthur ♯3 CIRFL] occurred at alternating temperatures of 10 to 20 and 20 to 30 C. Seeds germinated (20%) in 1.7 M NaCl. Light was important in seed germination; however, its absence could be overcome by adding 8.6 × 10-5 M GA3 (gibberellic acid) to the germination medium. The greatest seedling emergence occurred when seeds were planted on the soil surface and was lower when seeds were buried at any depth in the soil. Osmotic potentials at −0.5 MPa and greater reduced germination, but 3% of the seeds germinated at −1.3 MPa. Flodman thistle seedlings tolerated average plant water potentials of −0.9 and −1.1 MPa, but they died when the water potential was decreased to −1.5 MPa. Flodman thistle seedlings 43 days old and with four true leaves resprouted after topgrowth removal. Regrowth was evident on 75% of the clipped plants 13 days after initial topgrowth removal. Flodman thistle rosettes spread more rapidly and rosette survival was enhanced more in a weed-free nursery than in a weedy pasture.

Keywords

GA3IAAethephonmoisture stresssalinityCIRFL
Type
Weed Biology and Ecology
Information
Weed Science , Volume 32 , Issue 6 , November 1984 , pp. 768 - 773
Copyright
Copyright © 1984 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. Britton, N. L. and Brown, H. A. 1970. An illustrated flora of the northern United States and Canada. Volume III. Dover Publications, Inc., New York. 637 pp.Google Scholar
2. Evetts, L. L. and Burnside, O. C. 1972. Germination and seedling development of common milkweed and other species. Weed Sci. 20:371–378.Google Scholar
3. Guneyli, E., Burnside, O. C., and Nordquist, P. T. 1969. Influence seedling characteristics on weed competitive ability of sorghum hybrids and imbred lines. Crop Sci. 9:713–716.CrossRefGoogle Scholar
4. Kohler, D. 1966. Dependence of the gibberellin production of normal peas in the phytochrome system. Plants 69:27–33.Google Scholar
5. McCarty, M. K., Klingman, D. L., and Morrow, L. A. 1974. Interrelations of weed control and pasture management methods at Lincoln, Nebraska, 1949–1969. U.S. Dep. Agric. Tech. Bull. 1473.46 pp.Google Scholar
6. McCarty, M. K., Scifres, C. J., and Robinson, L. R. 1967. A descriptive guide for major Nebraska thistles. Nebr. Agric. Exp. Stn. Bull. 493, Lincoln, NE. 24 pp.Google Scholar
7. Moore, R. J. and Frankton, C. 1974. The thistles of Canada. Can. Dep. of Agric. Monograph No. 10. 110 pp.Google Scholar
8. Powell, P. M. and Pfeifer, R. P. 1956. The effect of control of limited moisture on seedling growth of Cheyenne winter wheat selections. Agron. J. 48:555–557.Google Scholar
9. Richards, L. A. 1954. Diagnosis and improvement of saline and alkali soils. U.S. Dep. Agric., Agric. Handb. 60. 160 pp.Google Scholar
10. Rydberg, P. A. 1932. Flora of the prairies and plains of central North America. The Science Press Printing Co., Lancaster, PA. 969 pp.Google Scholar
11. Salisbury, F. B. and Ross, C. 1974. Plant Physiology. Wadsworth Publishing Co., Belmont, CA. 747 pp.Google Scholar
12. Scifers, C. S. and McCarty, M. K. 1969. Some factors affecting germination and seedling growth of Scotch thistle. Univ. Nebr. Res. Bull. 228. 28 pp.Google Scholar
13. Wilson, R. G. 1979. Germination and seedling development of Canada thistle (Cirsium arvense). Weed Sci. 27:146–151.Google Scholar