Table 3.
Mixed infection type of eight species of sweet potato infecting viruses from sweet potato growing fields of Korea from 2012 to 2014
| Mixed infection type | 2012* | 2013 | 2014 | |||
|---|---|---|---|---|---|---|
|
|
|
|
||||
| No. Virus species combinations | No. Virus infected samples (Rate, %) | No. Virus species combinations | No. Virus infected samples (Rate, %) | No. Virus species combinations | No. Virus infected samples (Rate, %) | |
| Octuple | 1 | 1 (0.6) | Not detected | Not detected | ||
| Septuple | 2 | 2 (1.3) | 1 | 1 (0.1) | 2 | 3 (0.2) |
| Sextuple | 10 | 30 (19.5) | 1 | 1 (0.1) | 7 | 16 (1.3) |
| Quintuple | 9 | 50 (32.5) | 8 | 17 (2.1) | 19 | 51 (4.2) |
| Quadruple | 12 | 32 (20.8) | 22 | 55 (6.8) | 33 | 120 (9.8) |
| Triple | 8 | 19 (12.3) | 23 | 83 (10.2) | 38 | 208 (16.9) |
| Double | 7 | 13 (8.4) | 19 | 228 (28.0) | 22 | 251 (20. 4) |
| Single | 3 | 6 (3.9) | 7 | 284 (34.9) | 7 | 339 (27.6) |
| Not infected | - | 1 (0.6) | - | 146 (18.0) | - | 240 (19.5) |
|
| ||||||
| Total | 52 | 154 | 81 | 813 (100) | 127 | 1,228 (100) |
*
Survey results were obtained from the report of Kwak et al (2014).