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Figure 1:
A map of counties in Indiana where Heterodera glycines virulence phenotypes were tested using soil samples collected in 2020. The H. glycines virulence type(s) found in each county tested are labeled on the map.
Heterodera glycines (HG) virulence phenotypes detected from soil samples collected in Indiana in 2020
Sample ID
County
Female index (FI)a
Meanb
HG Type
PI 548402 #1
PI 88788 #2
PI 90763 #3
PI 437654 #4
PI 209332 #5
PI 89772 #6
PI 548316 #7
PI 567516C
48
Adams
7.6
34.2
2.6
1.5
26.4
1.4
37.6
0.0
217
2.5.7
44
Benton
0.4
30.1
15.6
0.0
49.2
0.0
42.3
0.0
666
2.3.5.7
82
Carroll
1.5
73.5
0.2
0.0
44.6
0.2
28.0
14.4
249
2.5.7c
83
Carroll
19.2
64.3
0.4
0.0
70.4
0.0
84.4
9.4
110
1.2.5.7
96
Carroll
2.4
84.8
0.5
1.3
75.7
1.5
80.0
4.4
168
2.5.7
4
DeKalb
0.5
70.5
0.0
0.0
46.6
0.3
57.0
9.6
223
2.5.7
34
DeKalb
4.7
26.5
6.0
6.8
26.0
3.3
51.5
3.1
262
2.5.7
12
Fountain
0.6
37.5
0.1
0.3
25.4
0.5
32.3
5.7
236
2.5.7
69
Fulton
0.7
62.8
0.3
0.0
58.5
0.8
69.6
0.0
371
2.5.7
33
Grant
2.1
12.5
0.5
0.4
19.1
0.4
22.4
12.7
572
2.5.7c
50
Grant
0.0
23.7
0.0
0.0
38.0
0.0
27.7
11.8
102
2.5.7c
51
Grant
16.8
65.2
1.0
1.1
57.4
0.1
57.9
7.5
306
1.2.5.7
92
Hancock
2.1
32.2
0.7
0.0
23.4
0.1
40.8
1.9
407
2.5.7
18
Huntington
2.1
21.0
0.6
3.0
22.3
0.8
68.0
0.3
488
2.5.7
21
Huntington
12.6
23.7
3.0
0.0
34.0
4.5
65.4
26.0
170
1.2.5.7c
27
Huntington
0.9
24.1
1.1
1.1
33.0
0.7
12.3
8.7
68*
2.5.7
29
Huntington
5.4
24.4
0.0
0.2
34.9
0.0
62.3
11.9
319
2.5.7c
30
Huntington
0.8
15.7
0.1
0.0
15.8
0.1
47.3
3.0
527
2.5.7
6
Jasper
4.4
64.0
0.9
1.7
35.4
0.8
42.5
8.2
93*
2.5.7
117
Jennings
0.6
8.5
0.0
0.0
16.0
0.0
12.1
18.8
94*
5.7c
78
Knox
1.8
11.4
0.5
1.2
1.2
1.5
22.3
20.5
178
2.7c
85
Knox
0.0
6.7
0.0
0.3
5.6
0.0
16.9
0.0
142
7
77
Kosciusko
6.2
70.6
20.3
3.7
43.6
2.0
15.2
2.9
399
2.3.5.7
118
Lawrence
0.7
3.5
0.0
0.0
12.6
0.0
15.3
2.6
228
5.7
108
Noble
2.2
50.4
0.4
0.0
73.7
0.0
33.7
1.6
179
2.5.7
109
Noble
3.1
16.9
0.3
0.1
47.2
0.4
49.3
7.7
681
2.5.7
110
Noble
1.4
5.8
2.0
0.6
4.3
0.4
14.5
2.9
325
7
112
Noble
2.5
58.0
0.5
1.6
24.7
0.0
16.9
0.9
95*
2.5.7
121
Owen
2.3
3.9
0.4
0.0
14.1
0.0
25.5
3.8
331
5.7
11
Parke
1.1
16.1
0.2
1.1
17.6
0.4
24.3
0.0
602
2.5.7
104
Porter
1.6
30.2
0.9
0.3
46.5
0.0
66.1
5.9
291
2.5.7
123
Porter
1.0
77.6
1.9
0.0
69.1
0.3
72.3
37.7
180
2.5.7c
54
Pulaski
13.0
46.5
4.7
0.0
35.6
2.6
47.7
2.1
80*
1.2.5.7
9
Putnam
6.7
70.5
3.8
2.1
76.2
6.6
62.3
0.0
126
2.5.7
88
Rush
2.5
15.3
0.1
0.1
20.3
0.3
24.1
3.6
872
2.5.7
61
Tippecanoe
1.9
17.6
0.9
1.3
3.8
0.2
9.0
1.2
511
2
71
Tippecanoe
0.3
80.8
0.2
0.1
45.6
0.0
63.1
3.1
243
2.5.7
56
Vigo
5.1
62.7
0.0
0.0
57.5
9.1
78.1
5.7
213
2.5.7
115
Warren
5.2
35.9
0.9
0.0
33.9
0.0
34.8
3.7
216
2.5.7
80
White
38.1
69.1
0.0
0.0
61.8
5.4
59.3
1.9
179
1.2.5.7
53
Whitley
18.4
72.5
0.0
0.0
42.6
6.1
74.4
2.3
165
1.2.5.7
94
Whitley
1.5
36.6
0.2
0.3
17.5
0.0
31.0
5.8
557
2.5.7
Frequencies of HG types in soil samples collected in 2020 in Indiana
Type
No. of Populationsa
Frequency (%)
2.5.7
27
64.3
1.2.5.7
6
14.3
5.7
3
7.1
2.3.5.7
2
4.8
7
2
4.8
2.7
1
2.4
2
1
2.4
Population densities of soybean cyst nematode in soil samples collected in Indiana in 2020
County
Number of soil samplesa
Eggs and Juveniles
Minimum No.b
Maximum No.c
Average No.d
Adams
2
2500
5505
4003
Allen
3
1370
2500
1940
Benton
7
300
4300
2098
Carroll
7
665
13308
5254
Clinton
1
600
600
600
DeKalb
6
240
15600
4782
Fayette
4
400
10950
5316
Fountain
2
4950
10650
7800
Fulton
2
3320
6050
4685
Grant
4
400
6650
3358
Hancock
2
783
1050
916
Henry
2
417
483
450
Huntington
16
240
7265
1805
Jasper
4
220
17032
5669
Jennings
2
290
530
410
Knox
5
420
2100
1129
Kosciusko
1
10043
10043
10043
LaPorte
3
356
2280
1026
Lawrence
2
400
665
532
Montgomery
2
940
2610
1775
Noble
7
1020
19840
8313
Owen
2
290
300
295
Parke
1
2075
2075
2075
Porter
4
312
5940
2278
Pulaski
2
9045
10330
9688
Putnam
3
2425
13285
8070
Rush
2
853
2020
1437
Tippecanoe
14
165
6647
1418
Vigo
1
2120
2120
2120
Warren
1
765
765
765
White
4
550
6040
2888
Whitley
6
400
7040
2163
Univariate descriptive statistics of female indices (FI) of soybean cyst nematode populations that produced an FI ≥ 10% on soybean indicator lines
Soybean Indicator Line
FI value (%)b
FI ≥ 10%a
Minimum Observed
Maximum Observed
Average
PI 548402 (#1)
14.3
12.6
38.1
19.7
PI 88788 (#2)
88.1
11.4
84.8
43.9
PI 90763 (#3)
4.8
20.3
25.5
22.9
PI 209332 (#5)
90.5
12.6
76.2
39.8
PI 548316 (#7)
97.6
12.1
84.4
43.8
PI 567516C
19.0
11.8
37.7
19.2
Correlation coefficient among soybean indicator lines with resistance to soybean cyst nematode (SCN) based on female indices (FI)a from 42 SCN field populations collected in 2020 in Indiana