Number of Meloidogyne incognita race 3, M_ arenaria race 1, M_ javanica, and M_ haplanaria in roots of susceptible and resistant pepper lines at 1, 3, and 5 days after inoculation_
| Days after nematode inoculation | |||
|---|---|---|---|
| Cultivar/line (resistant gene) | 1 | 3 | 5 |
| M. incognita race 3 | |||
| Mellow StarX | 11.0±1.24 a | 21.8±2.47 a | 39.0±4.50 a |
| Yolo Wonder B (Me5)Y | 8.1±1.16 a | 15.0±1.74 b | 38.1±3.9 a |
| Charleston Belle (N)Y | 0.6±0.30 b | 3.8±0.72 c | 7.5±0.90 bc |
| HDA-149 (Me3) | 0.3±0.30 b | 3.0±0.60 c | 5.1±0.74 c |
| HDA-330 (Me1) | 0.8±0.45 b | 7.3±0.83 c | 12.0±1.16 b |
| PM-217 (Me1,Me2) | 0.5±0.30 b | 6.3±1.32 c | 10.6±2.60 b |
| PM-687 (Me3,Me4) | 0.5±0.30 b | 3.8±1.20 c | 6.8±1.30 bc |
| M. arenaria race 1 | |||
| Mellow Star | 10.1±1.45 a | 17.1±2.93 a | 35.2±6.0 a |
| Yolo Wonder B | 7.8±1.85 a | 12.6±1.74 a | 37.0±5.8 a |
| Charleston Belle | 0.1±0.16 b | 2.3±0.77 b | 5.1±1.4 b |
| HDA-149 | 0.1±0.16 b | 3.0±0.77 b | 10.6±1.1 b |
| HDA-330 | 0.6±0.30 b | 5.0±0.78 b | 10.3±0.8 b |
| PM-217 | 0.3±0.30 b | 5.5±0.86 b | 9.5±1.1 b |
| PM-687 | 0.3±0.30 b | 4.6±1.67 b | 6.6±1.2 b |
| M. javanica | |||
| Mellow Star | 9.6±0.9 a | 18.7±2.3 a | 30.7±4.5 a |
| Yolo Wonder B | 0.5±0.06 b | 3.8±1.0 b | 9.8±1.2 b |
| Charleston Belle | 0.1±0.02 b | 2.1±0.7 b | 4.6±1.3 c |
| HDA-149 | 0.5±0.03 b | 4.8±1.0 b | 9.0±2.6 bc |
| HDA-330 | 0.6±0.1 b | 3.6±1.3 b | 5.8±1.1 bc |
| PM-217 | 0.3±0.02 b | 4.8±1.4 b | 9.3±2.3 b |
| PM-687 | 0.3±0.02 b | 1.8±0.72 b | 6.3±0.94 bc |
| M. haplanaria | |||
| Mellow Star | 7.2±1.04 a | 16.6±2.03 a | 21.1±2.1 a |
| Yolo Wonder B | 0.6±0.18 b | 4.5±0.8 b | 10.1±1.1 bc |
| Charleston Belle | 0.2±0.04 b | 2.5±0.8 b | 4.5±1.0 d |
| HDA-149 | 0.3±0.16 b | 3.9±0.7 b | 8.3±1.2 bc |
| HDA-330 | 0.3±0.06 b | 5.6±1.6 b | 9.6±2.1 bc |
| PM-217 | 0.3±0.06 b | 3.6±0.9 b | 10.8±1.1 b |
| PM-687 | 0.6±0.03 b | 4.3±1.3 b | 7.1±1.7 cd |
Resistance and susceptibility ratings of pepper plants to species of root-knot nematode (Meloidogyne spp_) based on greenhouse experiments_
| Cultivar/Line | Nematode resistance genes | M. incognita race 3 | M. arenaria race 1 | M. javanica | M. haplanaria |
|---|---|---|---|---|---|
| Mellow Star | None | HS | HS | HS | S |
| Yolo Wonder B | Me5 | HS | HS | HR | HR |
| Charleston Belle | N | HR | HR | HR | HR |
| HDA-149 | Me3 (=Me7) | HR | HR | HR | HR |
| HDA-330 | Me1 | R | HR | HR | HR |
| PM-217 | Me1, Me2 | HR | HR | HR | HR |
| PM-687 | Me3 (=Me7), Me4 | HR | HR | HR | HR |
Root fresh weight, gall index, numbers of eggs per gram fresh root mass, and reproduction factor of Meloidogyne incognita race 3, M_ arenaria race 1, M_ javanica, and M_ haplanaria on pepper cultivar/lines in two greenhouse trials_
| Cultivar/line | Root weight | Gall indexY | Eggs/g root | Reproduction factorZ |
|---|---|---|---|---|
| M. incognita race 3 | ||||
| Mellow StarX | 11.6±1.2 a | 3.7±0.6 a | 2,966.5±769.1 b | 33.9±7.37 b |
| Yolo Wonder BW | 11.2±1.4 a | 4.0±0.5 a | 4,387.4±1,037.6 a | 48.1±9.87 a |
| Charleston BelleW | 10.1±1.7 a | 0.5±0.3 b | 73.2±12.3 c | 0.6±0.09 c |
| HDA-149 | 10.3±1.5 a | 0.3±0.3 b | 6.5±2.0 c | 0.1±0.01 c |
| HDA-330 | 11.4±0.9 a | 0.7 ±0.2 b | 88.4±24.0 c | 0.9±0.27 c |
| PM-217 | 11.3±1.5 a | 0.2±0.3 c | 6.7±1.7 c | 0.1±0.02 c |
| PM-687 | 11.7±0.7 a | 0.3±0.3 b | 24.4±5.1 c | 0.3±0.06 c |
| M. arenaria race 1 | ||||
| Mellow Star | 11.1±1.4 a | 3.6±0.7 a | 3,205.3±718.1 a | 34.7±6.07 a |
| Yolo Wonder B | 10.0±1.5 a | 3.1±0.5 a | 3,163.4±904.2 a | 30.2±9.88 a |
| Charleston Belle | 11.1±1.2 a | 0.4±0.4 b | 10.6±0.8 b | 0.05±0.01 b |
| HDA-149 | 10.8±1.7 a | 0.4±0.3 b | 6.5±1.6 b | 0.07±0.02 b |
| HDA-330 | 10.1±1.3 a | 0.7±0.3 b | 32.8±9.3 b | 0.31±0.07 b |
| PM-217 | 10.7±1.6 a | 0.4±0.4 b | 8.4±1.7 b | 0.08±0.02 b |
| PM-687 | 11.5±1.1 a | 0.5±0.3 b | 3.5±0.9 b | 0.04±0.01 b |
| M. javanica | ||||
| Mellow Star | 11.7±1.3 a | 3.7±0.8 a | 2,059.5±454.0 a | 23.5±4.46 a |
| Yolo Wonder B | 9.4±1.6 a | 0.9±0.4 b | 5.0± 1.4 b | 0.04±0.01 b |
| Charleston Belle | 10.4±1.7 a | 0.4±0.4 b | 1.9±1.1 b | 0.01±0.01 b |
| HDA-149 | 9.5±1.5 a | 0.4±0.3 b | 10.1±3.6 b | 0.09±0.02 b |
| HDA-330 | 10.3±1.8 a | 0.5±0.4 b | 8.7±5.6 b | 0.06±0.03 b |
| PM-217 | 10.1±1.5 a | 0.4±0.3 b | 24.6±8.9 b | 0.24±0.01 b |
| PM-687 | 10.1±1.7 a | 0.7±0.3 b | 1.7±0.7 b | 0.01±0.00 b |
| M. haplanaria | ||||
| Mellow Star | 12.4±1.4 a | 2.7±1.25 a | 655.0±57.0 a | 8.1±1.25 a |
| Yolo Wonder B | 10.3±1.1 a | 0.3±0.02 b | 5.4±2.4 b | 0.06±0.02 b |
| Charleston Belle | 9.3±1.3 a | 0.4±0.06 b | 20.2±8.9 b | 0.17±0.06 b |
| HDA-149 | 10.7±1.1 a | 0.4±0.04 b | 12.7±4.9 b | 0.13±0.04 b |
| HDA-330 | 10.5±1.1 a | 0.7±0.07 b | 25.9±7.3 b | 0.27±0.07 b |
| PM-217 | 10.5±1.1 a | 0.4±0.01 b | 3.5±1.5 b | 0.03±0.01 b |
| PM-687 | 12.0±1.2 a | 0.6±0.04 b | 13.3±2.9 b | 0.15±0.03 b |