title: Identification and quantitative analysis of the volatile substances emitted by maturing cotton in the field.
abstract: When atmosphere from cotton plants (Gossypium hirsutum L., var. Deltapine Smoothleaf) was condensed by passing it over the expansion coil of an air conditioner and three 1-hour collections per day (early morning, noon, and late afternoon) were made, the total essential oils were found to consist of 50 to 60% beta-bisabolol (I(k) 1660) and gamma-bisabolene (I(k) 1550) and 30 to 40% geraniol (I(k) 1250), myrtenal (I(k) 1328), nerolidol (I(k) 1520), and beta-caryophyllene oxide (I(k) 1590). As the plant matured, trans-2-hexanol was produced in concentrations of 7 to 27%. Before fruiting, beta-bisabolol made up as much as 60% of the total essential oil transpired by the plants, and as the concentration of beta-bisabolol increased, that of gamma-bisabolene decreased.
authors.affiliation: Agricultural Research Service, State College, Mississippi 39762.
authors.forename: A C
authors.initials: AC
authors.lastname: Thompson
authors.forename: D N
authors.initials: DN
authors.lastname: Baker
authors.forename: R C
authors.initials: RC
authors.lastname: Gueldner
authors.forename: P A
authors.initials: PA
authors.lastname: Hedin