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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Concentration dependence of d-cysteine on root abscission. d-cysteine at 0.65, 1.25, 2.5, and 5 mM (from the bottom to top) was added into the culture medium (pH 5.8). Means ± SE (n = 5).