אסיף מאגר המחקר החקלאי

Cortex resin monoterpene composition in Pinus brutia provenances grown in Israel

Year:

1987

Source of publication :

Authors :

Volume :

15

Co-Authors:

Schiller, G., Agricultural Research Organization, The Volcani Center, POB 6 Bet-Dagan 50-250, Israel
Grunwald, C., Agricultural Research Organization, The Volcani Center, POB 6 Bet-Dagan 50-250, Israel

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Abstract:

Cortex resin collected from 7-year-old trees of Pinus brutia from different seed sources growing in experimental plots was analyzed by GLC and GC-MS. The monoterpene composition of the cortex resin Pinus brutia subsp, brutia differs markedly from that of Pinus brutia subsp; eldarica, and of Pinus halepensis Mill. trees of the same age. Within a provenance, monoterpene composition varies considerably, yet the provenances differ significantly when analyzed by multiple analysis of variance and Duncan's Multiple Range Test. Five chemotypes were identified using the Fastclus procedure; one of which has a monoterpene composition which corresponds only to the mean monoterpene composition of the subsp. elderica. Most of the subsp. brutia provenances include a range of chemotypes, thereby implying the occurrence of genotypic variation. Cluster analysis discriminates conspicuously between subsp. eldarica and subsp. brutia. Subsp. brutia provenances are arranged into two groups, the dividing line between them being approximately the 35°E meridian. © 1987.

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