Table 1 Release rates of volatiles (µg/h) from plant materials (leaves, needles, and bark of nonhosts birch, Betula pendula, and Norway spruce, Picea abies, and host Scots pine, Pinus sylvestris) used in the field test of Pityogenes bidentatus inhibition to aggregation pheromone (2 May 1998, Fig. 1). The volatiles were collected on Porapak Q and identified by GC-MSDa | ||||||
Birch: B. pendula | Spruce: P. abies | Pine: P. sylvestris | ||||
---|---|---|---|---|---|---|
Compound | Leaves | Barkb | Needles | Bark | Needles | Bark |
alpha-pinene | 0.1 | 0.2 | 7 | 260 | 200 | 110 |
Camphene | 2.9 | . | 0.6 | 14 | 5 | 2 |
B-pinene | 105 | 0.1 | 6 | 260 | 16 | 4.2 |
Sabinene | 7 | . | 0.1 | 15 | 35 | 3.2 |
3-Carene | 3.9 | 0.05 | 1.1 | 12 | 315 | 160 |
Myrcene | 25 | 0.01 | 0.3 | 100 | 32 | 25 |
2-Carene | 0.5 | . | . | 1.7 | 5.7 | 4.8 |
Limonene | 26 | 0.01 | 1.1 | 140 | 6.8 | 11.2 |
B-Phellandrene | 42 | 0.02 | 1.2 | 81 | 31 | 9.3 |
gamma-Terpinene | 0.4 | . | 0.03 | 3.7 | 7.4 | 11.3 |
Terpinolene | 1.3 | . | 0.03 | 22 | 34 | 70 |
1-Hexanol | 0.01 | 0.01 | . | . | . | . |
(Z)-3-Hexen-1-ol | 0.06 | 0.01 | . | . | . | . |
Terpinene-4-ol | . | . | . | 1.8 | . | 0.1 |
alpha-Cedrene | . | . | . | 3.2 | . | . |
Copaenene | 1.9 | . | . | 0.2 | 0.4 | 0.6 |
B-Bourbonene + (isomers) | 0.1+(1.2) | . | . | . | . | . |
Camphor | . | . | . | . | 0.2 | 0.8 |
Bornyl acetate | . | . | 0.03 | . | 0.5 | 1.2 |
alpha-Santalene | . | 0.5 | . | . | . | . |
alpha-Zingiberene | . | 0.8 | . | . | . | . |
B-Caryophyllene | 0.5 | . | . | 15 | 1 | . |
alpha-Terpinyl acetate | . | . | . | . | . | 2.7 |
Germacrene-D | . | . | . | . | 0.7 | 2.1 |
alpha-Muurolene | 0.2 | . | . | . | 0.4 | 1.4 |
delta-Cadinene | 0.9 | . | . | 0.2 | 2.3 | 0.2 |
Myrtenol | . | . | . | 0.1 | . | 0.1 |
trans-Carveol | . | . | . | . | . | 0.04 |
J. A. BYERS1, Q. H. ZHANG1, and G. BIRGERSSON2 1Department of Crop Science, Swedish University of Agricultural Sciences, SE-230 53 Alnarp, Sweden 2Chemical Ecology, Göteborg University, SE-405 30 Göteborg, Sweden |
---|