The terpenes of Virginia pine (<u>Pinus virginiana mill</u>.), with investigations of their attractancy to the southern pine beetle (<u>Dendroctonus frontalis</u> zimm.)

A gas chromatograph, equipped with a flame ionization detector, was used to qualitatively and quantitatively analyze the monoterpenes of Virginia pine. The instrument was adjusted for optimum performance prior to sample analysis. Two packed columns with stationary phases of different polarity, Carbowax 20M and polyphenyl ether + Igepal + Versamid-9JO, were used predominantly for analytical determinations. However, a S.C.O.T. column coated with UCON LB550X stationary phase, was used for measuring some compounds. The monoterpenes of Virginia pines were analyzed from foliage, phloem, and bark distillates, pentane extracts of xylem resin and beetle pitch tubes, and foliage and tree-bole vapors. Qualitative determinations were made by comparing relative retention time with known chemicals and mixtures of chemicals, and by introducing these standards into the sample. Quantitative determinations were based on normalization of peak areas for the known components. Peak areas measured with a disc integrator for liquid samples, and with a planimeter for vapor samples.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Entomology

Department dc:contributor.department

Entomology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1971

Author dc:creator

• Lewis, Kenneth Ronald

• monoterpenes

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

etd-02132009-172151

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/37361