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. 2020 Jun 15;10(6):244. doi: 10.3390/metabo10060244

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© 2020 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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(A) Chemical composition of 10 allelochemicals in 9 OM rice cultivars identified as 2,4-dihydroxybenzaldehyde (1); 2,6-dimethoxybenzoic acid (2); 3,4-dihydroxybenzoic acid (3); 3,4-dihydroxyphenylacetic acid (4); 3-hydroxybenzoic acid (5); 4-hydroxybenzoic acid (6); 5-methoxysalicylic acid (7); 7-oxostigmasterol (8); benzoic acid (9); and 2,4-dimethoxybenzoic acid (10). (B) Chemical structure of 10 allelochemicals in 9 OM rice cultivars identified as 2,5-dihydroxybenzoic acid (11); 3,4-dimethoxybenzoic acid (12); 3,5-dihydroxybenzoic acid (13); 3,5-dimethoxybenzoic acid (14); cinnamic acid (15); coumarin (16); ergosterol peroxide (17); p-hydroxycinnamic acid (18); salicylic acid (19); and vanillic acid (20).

(A) Chemical composition of 10 allelochemicals in 9 OM rice cultivars identified as 2,4-dihydroxybenzaldehyde (1); 2,6-dimethoxybenzoic acid (2); 3,4-dihydroxybenzoic acid (3); 3,4-dihydroxyphenylacetic acid (4); 3-hydroxybenzoic acid (5); 4-hydroxybenzoic acid (6); 5-methoxysalicylic acid (7); 7-oxostigmasterol (8); benzoic acid (9); and 2,4-dimethoxybenzoic acid (10). (B) Chemical structure of 10 allelochemicals in 9 OM rice cultivars identified as 2,5-dihydroxybenzoic acid (11); 3,4-dimethoxybenzoic acid (12); 3,5-dihydroxybenzoic acid (13); 3,5-dimethoxybenzoic acid (14); cinnamic acid (15); coumarin (16); ergosterol peroxide (17); p-hydroxycinnamic acid (18); salicylic acid (19); and vanillic acid (20).