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| Web URL(s): | http://www.jstor.org/stable/2434135?origin=JSTOR-pdf
Last checked: 08/17/2012
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http://www.jstor.org/stable/pdfplus/2434135.pdf
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| Publication Type:
| Refereed |
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| Author(s): | Dunlop, J.;
Glass, A. D. M.;
Tomkins, B. D. |
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| Author Affiliation: | Dunlop and Tomkins: Grasslands Division, D.S.I.R., Palmerston North, New Zealand; Glass: Department of Botany, University of British Columbia, Vancouver, B.C., Canada |
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| Title: | The regulation of K+ uptake by ryegrass and white clover roots in relation to their competition for potassium. |
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| Source: | New Phytologist. Vol. 83, No. 2, September 1979, p. 365-370. |
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| Publishing Information: | Oxford, England, United Kingdom: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.jstor.org/stable/info/2434135
Last checked: 10/04/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Lolium multiflorum; Trifolium repens; Potassium; Competition
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| Abstract/Contents: | "The regulation of K+ influx into roots of Westerwolds ryegrass (Lolium multiforum Lam.) and white clover (Trifolium repens L.) seedlings has been studied. In low salt plants the absorption isotherms had the same Michaelis constants (Km) but ryegrass had a greater maximum rate of influx (Vmax) than white clover. When the potassium contents of the roots were increased the difference in Vmax, diminished but the Kms increased, the value for white clover increasing much more rapidly than the value for ryegrass. The data gave very similar Hill plots for both species which suggests that the molecular mechanisms responsible for the regulation of potassium absorption have strong similarities. The practical implications of the findings are considered and it is suggested that under conditions where competition for potassium is important the specific rate of potassium absorption for ryegrass could be two to five times faster than that for white clover." |
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| Language: | English |
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| References: | 13 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dunlop, J., A. D. M. Glass, and B. D. Tomkins. 1979. The regulation of K+ uptake by ryegrass and white clover roots in relation to their competition for potassium.. New Phytol. 83(2):p. 365-370. |
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| Web URL(s):
http://www.jstor.org/stable/2434135?origin=JSTOR-pdf
Last checked: 08/17/2012
Access conditions: Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/2434135.pdf
Last checked: 08/17/2012
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2219226 |
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