Variabilidad del contenido de aceite, composición en ácidos grasos y contenido de ácido nervónico en semillas Acer truncatum nativas de 14 regiones de China
DOI:
https://doi.org/10.3989/gya.0465181Palabras clave:
Acer truncatum, Ácido Nervónico, Composición de ácidos grasos, Contenido de aceite, Genotipo, Variación geográficaResumen
El aceite de semillas de 138 accesiones de 14 poblaciones de Acer truncatum (familia Aceraceae) nativas de China se analizaron mediante espectroscopía de resonancia magnética nuclear pulsada y cromatografía de gases y detección de ionización de llama. El contenido de aceite varió de 17.81% a 36.56% (promedio: 28.57%), y están formadas principalmente por 14 tipos de ácidos grasos. Palmítico (4.69%), esteárico (2.30%), oleico (25.19%), linoleico (32.97%), linolénico (2.76%), cis-11-eicosenoico (7.90%), erúcico (16.49%) y nervónico (5.76 %) los ácidos grasos representaron el 98% de la grasa total. El contenido de ácido nervónico varió de 3,90% a 7,85% entre las accesiones. Se observaron variaciones significativas en el contenido de aceite y en los ácidos grasos predominantes entre las poblaciones. El análisis jerárquico de conglomerados y el análisis de componentes principales detectaron evidentes variaciones geográficas entre las poblaciones de A. truncatum que se correlacionaban con las variaciones ambientales (especialmente altitud, temperatura y precipitación) y permitieron agrupar las poblaciones en tres grupos según las ubicaciones geográficas.
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