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Table 2 Identified silk surface hydrocarbon constituents. Alkane and alkene constituents identified across the evaluated genotypes are listed. Alkenes with double bonds between the 7th and 8th or 9th and 10th carbon atoms of the alkyl chain are reported as “:1(7)” and “:1(9)” constituents, respectively. The “:1(> 9)” constituents represent an isomeric mix of alkenes that harbor double bonds at the 10th, 11th, 12th, 13th, or 14th position in the alkyl chain. A single diene, identified as “C29:2” was observed with unidentified double bond positions

From: Genetic and environmental variation impact the cuticular hydrocarbon metabolome on the stigmatic surfaces of maize

Individual Surface Hydrocarbon Constituents
Alkane constituents C21, C23, C24, C25, C27, C28, C29, C30, C31
Alkene constituents
 7-Monoenes C23:1 (7), C24:1 (7), C25:1 (7), C26:1 (7), C27:1 (7), C28:1 (7), C29:1 (7), C30:1 (7), C31:1 (7)
 9-Monoenes C23:1 (9), C24:1 (9), C25:1 (9), C27:1 (9), C29:1 (9), C30:1 (9), C31:1 (9)
 > 9-Monoenes C29:1(> 9), C31:1(> 9)
 Diene C29:2