Table 1.
Shoot and root CBSD symptom incidence and severity, coefficient of determination (r 2 ) between virus load and mean shoot symptom expression, and harvest index
| Genotype | Shoot incidence % (9MAP) | Shoot symptom severity (9MAP) | Root necrosis incidence % | Root necrosis severity | Coefficient of determination (r 2 ) between virus titre and mean shoot symptoms at 3,5,7,9 and 11MAP | Harvest index | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD* | Min | Max | Mean | SD* | Min | Max | UCBSV | CBSV | ||||
| NASE 14 | 0 | 1.00 | 0.00 | 1 | 1 | 31.7 | 1.35 | 0.88 | 1 | 5 | - | - | 0.37 |
| Kiroba | 0 | 1.00 | 0.00 | 1 | 1 | 14.3 | 1.07 | 0.12 | 1 | 3 | - | - | 0.36 |
| NASE 1 | 0 | 1.00 | 0.00 | 1 | 1 | 18.0 | 1.05 | 0.09 | 1 | 2 | - | - | 0.35 |
| NASE 19 | 0 | 1.00 | 0.00 | 1 | 1 | 67.0 | 2.15 | 1.52 | 1 | 5 | - | - | 0.26 |
| Namikonga | 9 | 1.09 | 0.30 | 1 | 2 | 10.0 | 1.03 | 0.04 | 1 | 2 | 0.37 | 0.67 | 0.15 |
| TZ/130 | 17 | 1.17 | 0.39 | 1 | 2 | 38.3 | 1.20 | 0.67 | 1 | 4 | 0.17 | 0.33 | 0.44 |
| AR40-6 | 52 | 1.61 | 0.58 | 1 | 3 | 30.3 | 1.09 | 0.28 | 1 | 3 | 0.16 | 0.97 | 0.49 |
| Kibaha | 75 | 2.25 | 0.89 | 1 | 3 | 67.4 | 2.75 | 1.00 | 3 | 5 | 0.93 | 0.35 | 0.37 |
| NDL06/132 | 67 | 2.30 | 1.53 | 1 | 4 | 39.7 | 1.53 | 0.40 | 2 | 3 | 0.92 | 0.67 | 0.49 |
| Albert | 100 | 3.00 | 0.00 | 3 | 3 | 66.3 | 2.54 | 1.23 | 1 | 5 | 0.96 | 0.52 | 0.29 |
| TME 204 | 100 | 4.07 | 0.55 | 3 | 5 | 100 | 4.78 | 0.39 | 4 | 5 | 0.84 | 0.53 | 0.16 |
*SD – Standard deviation.