Abstract
Genetic control of foliar oil composition was investigated amongst half-sib progeny of an interspecific eucalypt hybrid. The oil was found to be largely composed of the monoterpenes, limonene, α−pinene, γ−terpinene, 1,8 cineole and p-cymene. Due to difficulties in the interpretation of the compositional data based on raw proportions, further analysis was conducted using log-ratio variables. A high degree of intercorrelation amongst log-ratios was thought to be a consequence of commonality in the biosynthetic origins of the monoterpenes. Quantitative trait locus (QTL) analysis of log-ratio variables indicated that a significant (68–81%) proportion of the variation in four out of the ten possible log-ratios were controlled by a single genomic region of the maternal Eucalyptus grandis parent. The impact of this genomic region upon oil composition was thought to be a consequence of a gene, or genes, controlling the production of limonene, as limonene was the predominant oil constituent in many hybrid individuals and was common to all log-ratios associated with the identified genomic region.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 20 November 1998 / Accepted: 16 June 1999
Rights and permissions
About this article
Cite this article
Shepherd, M., Chaparro, J. & Teasdale, R. Genetic mapping of monoterpene composition in an interspecific eucalypt hybrid. Theor Appl Genet 99, 1207–1215 (1999). https://doi.org/10.1007/s001220051326
Issue Date:
DOI: https://doi.org/10.1007/s001220051326