Studies on the mineral nutrition of grain sorghum: VII sulfate uptake by excised roots
DOI:
https://doi.org/10.1590/S0071-12761977000100032Abstract
Some aspects of SO4² absorption by excised roots of "Sorghum bicolor (L.) Moench" namely, inibition effects of NaF, KCN, 2,4- DNP and factors such as aeration, solution pH and temperature on the rate of absorption were studied. The excised roots showed multiphasic mecanism of SO4²- absorption. The relative absorption rates, presented by three varieties, were in decreasing order: Tey-101, Contibrasil-101 and Dekalb-E-57. Inhibition effects on the absorption of SO4²- by excised roots were shown in the case of the three ihibitors studied hereof-. Aeration and solution temperature are important factors on SO4²- absorption. At the external solutio n concentration of Na,2SO(4)10-³M the best fitted equation to the experimental values was shown to be: umoles/g dry matter = 1,639- 1,585 exp. (-0,006618t)Downloads
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Published
1977-01-01
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naodefinida
How to Cite
Malavolta, E., Ponchio, C., Monteiro, F., Silva, G., Chitolina, J., Nogueira, F., Jaha, P., Del Giudice, R., Assis, V., Aguirre, A., Caetano, A., Garcia, L., Matsui, E., Dantas, E., Castanheira, L., Santos, E., Gonçalves, A., Faganello, B., Moraes, M., & Cicero, S. (1977). Studies on the mineral nutrition of grain sorghum: VII sulfate uptake by excised roots . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 34, 427-443. https://doi.org/10.1590/S0071-12761977000100032