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. 2019 Aug 7;10(8):594. doi: 10.3390/genes10080594

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© 2019 by the authors.

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/).

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Accumulation profiles of heterocyclic compounds extracted from different parts (bulb, roots, leaves, stem and flowers) at six developmental stages of Narcissus papyraceus obtained by HPLC- photodiode array (PDA) analysis. (A) The concentration of compounds detected in each plant sample. (B) The number of compounds detected in each plant sample. (C) Relative concentration of lycorine in each plant sample. This is the ratio of the concentration of lycorine to the total concentration of all compounds in the sample. The extracts having the same letter present no significant differences (p < 0.05) according to the Tukey statistical test.