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Simultaneous measurement of water flow velocity and solute transport in xylem and phloem of adult plants of Ricinus communis over a daily time course by nuclear magnetic resonance spectrometry

A. Peuke ; M. Rokitta ; U. Zimmermann ; L. Schreiber ; A. Haase | 2001

A new method for simultaneously quantifying rates of flow in xylem and phloem using the FLASH imaging capabilities of nuclear magnetic resonance (NMR) spectrometry was applied in this study. The method has a time resolution of up to 4 min (for t[...]

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The uptake and flow of C, N and ions between roots and shoots in Ricinus communis L .2. Grown with low or high nitrate supply

A. Peuke ; W. Hartung ; W. Jeschke | 1994

Seedlings of Ricinus communis L. cultivated in quartz sand were supplied with a nutrient solution containing either 0.2 mol m(-3) NO3- or 4.0 mol m(-3) NO3- as the nitrogen source to obtain insufficiently (low supply, nitrogen-limited) or well-f[...]

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The uptake and flow of C, N and ions between roots and shoots in Ricinus communis L .3. Long-distance transport of abscisic acid depending on nitrogen nutrition and salt stress

A. Peuke ; W. Jeschke ; W. Hartung | 1994

Seedlings of Ricinus communis L. were cultivated in quartz sand and supplied with media which contained either different concentrations of nitrate or ammonium nitrogen and were treated with a low salt stress. The concentration of ABA was determi[...]

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