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Percentage of Heterodera glycines J2 hatching from eggs exposed for 7 days to different concentrations of four volatile compounds identified in the emissions of soybean, bean, and ryegrass leaves or roots.
Hatching (%)
Treatment
Concentration (µg/mlor mMx)
Experiment 1
Experiment 2
Water
–
15.2yd
30.2b
Carbofuran
415
3.0f
4.6c
Zinc chloride
3x
31.4a
44.4a
Tween 80
–
27.3b
44.6a
Hexanal
1,000
25.3c
31.0b
600
23.8c
28.0b
200
22.7c
30.1b
Linalool
1,000
13.3d
26.0b
600
15.3d
25.0b
200
16.8d
28.4b
1-Hexanol
1,000
2.9f
5.3c
600
1.9f
4.1c
200
3.4f
5.5c
3-Octanol
1,000
3.8f
5.0c
600
3.3f
8.3c
200
7.5e
8.8c
Raw data related to Table 1.
Treatments
Time
Total_J2_hatched
%_J2_hatched
Control
1
147
13.01
Control
1
125
11.06
Control
1
169
14.96
Control
1
127
11.24
Control
1
145
12.83
Control
2
159
13.25
Control
2
183
15.25
Control
2
177
14.75
Control
2
147
12.25
Control
2
175
14.58
Soybean roots
1
277
24.51
Soybean roots
1
224
19.82
Soybean roots
1
203
17.96
Soybean roots
1
250
22.12
Soybean roots
1
249
22.04
Soybean roots
2
218
18.17
Soybean roots
2
258
21.50
Soybean roots
2
235
19.58
Soybean roots
2
244
20.33
Soybean roots
2
245
20.42
Bean roots
1
218
19.29
Bean roots
1
219
19.38
Bean roots
1
227
20.09
Bean roots
1
258
22.83
Bean roots
1
195
17.26
Bean roots
2
185
15.42
Bean roots
2
234
19.50
Bean roots
2
220
18.33
Bean roots
2
230
19.17
Bean roots
2
219
18.25
Ryegrass roots
1
209
18.50
Ryegrass roots
1
169
14.96
Ryegrass roots
1
234
20.71
Ryegrass roots
1
254
22.48
Ryegrass roots
1
194
17.17
Ryegrass roots
2
200
16.67
Ryegrass roots
2
189
15.75
Ryegrass roots
2
186
15.50
Ryegrass roots
2
175
14.58
Ryegrass roots
2
192
16.00
Soybean leaves
1
236
20.88
Soybean leaves
1
224
19.82
Soybean leaves
1
273
24.16
Soybean leaves
1
243
21.50
Soybean leaves
1
242
21.42
Soybean leaves
2
261
21.75
Soybean leaves
2
195
16.25
Soybean leaves
2
223
18.58
Soybean leaves
2
215
17.92
Soybean leaves
2
220
18.33
Bean leaves
1
215
19.03
Bean leaves
1
217
19.20
Bean leaves
1
250
22.12
Bean leaves
1
256
22.65
Bean leaves
1
223
19.73
Bean leaves
2
198
16.50
Bean leaves
2
197
16.42
Bean leaves
2
192
16.00
Bean leaves
2
186
15.50
Bean leaves
2
211
17.58
Alfalfa leaves
1
184
16.28
Alfalfa leaves
1
172
15.22
Alfalfa leaves
1
203
17.96
Alfalfa leaves
1
251
22.21
Alfalfa leaves
1
246
21.77
Alfalfa leaves
2
217
18.08
Alfalfa leaves
2
209
17.42
Alfalfa leaves
2
216
18.00
Alfalfa leaves
2
214
17.83
Alfalfa leaves
2
193
16.08
Volatile organic compounds from leaves or roots of soybeans, beans, ryegrass, and alfalfa characterized by GC-MS.
Compound
RI exp.a
RI lit.b
Ryegrass roots
Soybean leaves
Soybean roots
Bean leaves
Bean roots
Alfalfa leaves
Alcohols
Ethanol
+
+
+
+
3-Octanol
1,001
993
+
2-Octanol
1,005
997
+
+
3-Methyl-1-butanol
737
734
+
+
+
+
+
2-Methyl-1-butanol
745
738
+
+
+
+
1-Hexanol
872
867
+
+
+
1-Octen-3-ol
984
978
+
6-Methyl-5-hepten-2-ol
1,000
992
+
+
+
2-Ethyl-1-hexanol
1,032
1,029
+
+
+
Esters
Ethyl 2-methylbutyrate
845
848
+
Ethyl butyrate
801
802
+
Ethyl acetate
627
623
+
+
Hexyl acetate
1,014
1,014
+
+
Decyl acetate
1,409
1,408
+
Heptyl acetate
1,113
1,113
+
Octyl acetate
1,211
1,211
+
n-Nonyl acetate
1,310
1,302
+
Furans
2-Ethylfuran
705
708
+
+
2-Pentylfuran
990
991
+
+
+
Ketones
2-Butanone
605
605
+
2-Pentanone
703
695
+
+
2-Octanone
991
990
+
+
+
3-Octanone
988
986
+
+
+
+
6-Octen-2-one
985
985
+
+
3-Pentanone
704
700
+
+
+
2-Nonanone
1,092
1,091
+
+
3,5-Octadien-2-one
1,072
1,068
+
+
Aldehydes
Hexanal
806
800
+
Terpenes
Linalool
1,103
1,007
+
M-Cymene
1,024
1,023
+
+
+
+
B-phellandrene
1,030
1,025
+
Lavandulol
1,167
1,165
+
Isopulegol acetate
1,271
1,273
+
Sesquiterpene*
1,426
+
Sesquiterpene*
1,432
+
Ionone
1,482
1,485
+
Pyrazines
3-Methoxy-2,5-dimethyl
1,051
1,057
+
+
pyrazine
2-Isopropyl-3-methoxy
1,089
1,093
+
pyrazine
2-Sec-butyl-3-methoxy
1,167
1,164
+
pyrazine
Others
P-Ethylanisole
1,114
1,104
+
Ethenyl-benzene
895
891
+
+
+
+
4-ethyl-1,2-dimethoxy
1,322
+
benzene
Unidentified
1,019
+
+
Percentage of Heterodera glycines hatching after exposure of eggs for five days at 25°C to volatile organic compounds emitted by leaves and roots of soybeans and beans; ryegrass roots and alfalfa leaves.