A common belief is that plant roots absorb cations from soil solution experiments with corn (Zea mays L.) using K/Rb ratio to evaluate the source of K and Rb absorbed indicated that the plant roots absorbed these ions in the ratio of exchangeable K and Rb. The objective of this research was to study the source of K and Rb absorbed from soil by Jerusalem artichoke (Helianthus tuberosus L.) roots since they do not have root hairs and this may influence the uptake mechanism. Jerusalem artichoke absorbed K/Rb with a ratio which was intermediate between the ratio of exchangeable K and Rb and the ratio of these cations in solutions. In comparison with corn, Jerusalem artichoke absorbed K at one-third the rate, but absorbed water three times faster so that mass flow contributed a greater proportion of K absorbed by Jerusalem artichoke than that by corn. This, rather than differences in root hairs may be the reason for the observed differences in K uptake between corn and Jerusalem artichoke.
EL-Sayed, S. A. M. (2015). Effect of Potassium/Rubidium Ratio on the Uptake of Potassium by Jerusalem Artichoke Roots. Alexandria Science Exchange Journal, 36(January-March), 32-39. doi: 10.21608/asejaiqjsae.2015.2736
MLA
Said Abbas Mohammed EL-Sayed. "Effect of Potassium/Rubidium Ratio on the Uptake of Potassium by Jerusalem Artichoke Roots". Alexandria Science Exchange Journal, 36, January-March, 2015, 32-39. doi: 10.21608/asejaiqjsae.2015.2736
HARVARD
EL-Sayed, S. A. M. (2015). 'Effect of Potassium/Rubidium Ratio on the Uptake of Potassium by Jerusalem Artichoke Roots', Alexandria Science Exchange Journal, 36(January-March), pp. 32-39. doi: 10.21608/asejaiqjsae.2015.2736
VANCOUVER
EL-Sayed, S. A. M. Effect of Potassium/Rubidium Ratio on the Uptake of Potassium by Jerusalem Artichoke Roots. Alexandria Science Exchange Journal, 2015; 36(January-March): 32-39. doi: 10.21608/asejaiqjsae.2015.2736
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