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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 (https://creativecommons.org/licenses/by/4.0/).
Stomatal and chloroplast characteristics of L. chinense: (a) diploid stomata; (b) tetraploid stomata; (c) chloroplasts in the diploid guard cell; (d) chloroplasts in the tetraploid guard cell.