Chemical segregation of progeny of camphor trees with high camphor c.q. Linalool content

P.V. Khien, Ho Trung Chien, N.X. Dung, A.X. Leclercq, P.A. Leclercq

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Abstract

The propagation of open pollinated seed from two camphor trees with a high camphor and linalool content, respectively, yielded 115 progeny. The chemical composition of the leaf oils of these trees was analyzed by a combination of capillary GC and GC/MS. Four chemotypes could be distinguished among the 57 trees cultivated from a single mother tree rich in camphor [Cinnamomum camphora (L.) Sieb.J. The first group (23 trees) was rich in camphor (62-93%), and the second group (13 progeny) contained 1,8-cineole and a-terpineol as major compounds (30-57% and 14-25%, respectively). Thirteen trees yielded oils rich in (E)-nerolidol and 9-oxonerolidol (47-84%). The oils of eight other trees also contained (E)-nerolidol and 9-oxonerolidol (22-36%) but contained higher proportions of safrole (30-70010). The leaf oils of 58 individual trees propagated from another mother tree which was rich in linalool [C. camphora (1.) Sieb. var. linalooliferal, indicated the presence of six chemotypes. Most of the progeny, 33 trees, contained oils rich in linalool (72-96%), and seven trees yielded oils containing camphor as major constituent (70-86%). The oils from eight trees contained mainly (E)-nerolidol and 9-oxonerolidol (61-91%), while those from six progeny contained a mixture of camphor (19-71%) and Iinalool (14-72%). Three trees yielded oils rich in 1,8-cineole (54-56%), ~-pinene (16-24%) and a-terpineol (9-11%). The oil of one tree was characterized by the significant presence of linalool (38%), 1,8-cineole (36%) and ~-pinene (11%).
Original languageEnglish
Pages (from-to)607-612
JournalJournal of Essential Oil Research
Volume10
Issue number6
DOIs
Publication statusPublished - 1998

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