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Origin of 16 field-collected Mi-gene resistant processing tomato root samples used for nematode isolation.
Nematode population number
Origin County
Field-grown tomato cultivar
1
Yolo
Heinz5508
2
San Joaquin
SUN6366
3
Yolo
Heinz5508
4
Kern
CXD187
5
Yolo
Heinz5508
6
Kern
Heinz5208
7
Kern
Heinz5208
8
Fresno
UG19406
9
Fresno
SUN6366
10
Fresno
SUN6366
11
Yolo
Heinz5508
12
Yolo
Heinz5508
13
Solano
Heinz5508
14
Colusa
N6416
15
Sutter
H1310
16
Colusa
HM3888
Average (n=10) reproduction factor (RF) and root galling index (scale 0 – 10 = 0 = no galling and 10 = 100% of root system galled) on two different pepper cultivars inoculated with six root-knot nematode (Meloidogyne) populations (1,000 second-stage juveniles/pot) in a greenhouse pot trial.
Plant cultivar
Tomato Celebritya (Rb)
Pepper Baron (Sb)
Pepper Carolina Wonder (Rb)
Reproduction factor (RF)
Nematode populationc
Mi-3 control
0.3
17.5 ad
0.0 ad
Resistance-breaking
3 (Mi)
22.2
21.7 a
0.0 a
4 (Mj)
27.6
0.0 b
0.1 a
10 (Mi)
25.5
15.9 a
0.0 a
11 (Mi)
35.8
17.6 a
0.0 a
12 (Mi)
29.1
27.0 a
0.0 a
Galling index
Nematode populationc
Mi-3 control
0.3
3.5 cde
0.0 be
Resistance-breaking
3 (Mi)
7.3
5.2 ab
0.0 b
4 (Mj)
5.8
0.0 e
0.1 ab
10 (Mi)
6.5
4.5 bc
0.0 b
11 (Mi)
6.7
3.1 d
0.0 b
12 (Mi)
7.0
6.0 a
0.3 a
Average (n=10) reproduction factor (RF) and root galling index (scale 0 – 10 = 0 = no galling and 10 = 100% of root system galled) on two sweetpotato and two green bean cultivars inoculated with six root-knot nematode (Meloidogyne) populations (1,000 second-stage juveniles/pot) in a greenhouse pot trial.
Crop cultivar
Tomato Celebritya (R2)
Sweetpotato O’Henry (S2)
Sweetpotato Bonita (R2)
Green bean BlueLake (S2)
Green bean Nemasnap (R2)
Reproduction factor (RF)
Nematode populationc
Mi-3 control
0.4
30.4 ad
0.7 bd
42.9 ad
0.1 cd
Resistance-breaking
3 (Mi)
55.2
52.1 a
5.2 a
47.1 a
0.1 c
4 (Mj)
35.7
49.6 a
4.1 a
52.5 a
6.6 a
10 (Mi)
62.3
28.4 a
2.8 a
45.8 a
0.1 c
11 (Mi)
61.4
54.4 a
3.2 a
37.2 a
0.3 bc
12 (Mi)
48.9
47.3 a
3.7 a
39.9 a
0.4 b
Galling index
Nematode populationc
Mi-3 control
0.2
5.1 ae
0.6 ae
6.2 ae
0.3 be
Resistance-breaking
3 (Mi)
6.0
6.1 a
1.1 a
5.7 a
0.0 b
4 (Mj)
5.3
6.2 a
0.9 a
6.0 a
4.8 a
10 (Mi)
5.8
5.0 a
1.2 a
5.9 a
0.5 b
11 (Mi)
6.5
5.1 a
1.2 a
5.3 a
0.2 b
12 (Mi)
5.9
5.6 a
1.5 a
5.6 a
0.2 b
Average (n=10) reproduction factor (RF) and root galling index (scale 0 – 10 = 0 = no galling and 10 = 100% of root system galled) on two cotton and two cowpea cultivars inoculated with six root-knot nematode (Meloidogyne) populations (1,000 second-stage juveniles/pot) in a greenhouse pot trial.
Crop ultivar
Tomato Celebritya (Rb)
Cotton SJ2 (Sb)
Cotton DP 1474NR B2XF (Rb)
Cowpea CB46 Null-1 (Sb)
Cowpea CB46 (Rb)
Reproduction factor (RF)
Nematode populationc
Mi-3 control
0.5
14.5 ad
0.1 bcd
205.0 ad
0.1 bd
Resistance-breaking
3 (Mi)
111.4
0.1 c
0.0 d
16.2 b
0.9 b
4 (Mj)
88.8
1.4 b
0.6 ab
91.1 a
10.4 a
10 (Mi)
84.2
0.0 c
0.3 bc
76.9 a
0.1 b
11 (Mi)
128.9
0.1 c
0.1 cd
143.7 a
0.2 b
12 (Mi)
85.2
19.7 a
2.0 a
93.8 a
11.4 a
Galling index
Nematode populationc
Mi-3 control
0.4
3.0 ae
0.5 abe
6.8 ae
0.1 be
Resistance-breaking
3 (Mi)
7.9
0.1 c
0.0 b
6.0 a
0.9 b
4 (Mj)
7.8
1.6 b
0.6 ab
6.1 a
2.5 a
10 (Mi)
6.9
0.3 c
0.4 ab
6.7 a
0.4 b
11 (Mi)
7.4
0.2 c
0.1 ab
7.2 a
0.6 b
12 (Mi)
8.0
2.6 ab
0.9 a
5.6 a
2.9 a
Average (n=10) reproduction factor (RF) and galling index (scale 0 – 10 = 0 = no galling and 10 = 100% of root system galled) on seven different tomato cultivars inoculated with five resistance-breaking root-knot nematode (Meloidogyne) populations (1,000 second-stage juveniles/pot) and an avirulent M. incognita race 3 population in a greenhouse pot trial.