| RWASA1 | RWASA2 | RWASA3 | RWASA4 | |
| ELANDS | 4.33bc | 8.76a | 7.43bcd | 8.33a |
| GARIEP | 4.38bc | 8.71a | 7.72abc | 8.33a |
| KOONAP | 4.00cdef | 9.00a | 7.81abc | 7.71abc |
| MATLABAS | 4.00cdef | 8.10ab | 7.09cd | 7.81ab |
| SENQU | 4.19cde | 9.00a | 6.95cde | 8.05ab |
| PAN3111 | 8.76a | 8.90a | 8.667ab | 8.71a |
| PAN3118 | 8.95a | 8.67ab | 9.00a | 9.00a |
| PAN3120 | 8.86a | 8.86a | 9.00a | 9.00a |
| PAN3161 | 3.33ef | 4.14e | 4.05hi | 5.95bcdef |
| PAN3195 | 4.093cde | 9.00a | 4.14hi | 5.29ef |
| PAN3198 | 4.00cdef | 7.67abc | 7.28bcd | 7.00abcde |
| PAN3368 | 4.47cde | 4.00e | 4.43ghi | 4.8f |
| PAN3379 | 3.43def | 4.29e | 4.00hi | 4.00f |
| SST316 | 3.95cdef | 6.19d | 6.86cde | 8.29a |
| SST317 | 4.33bc | 6.34cd | 6.10def | 7.81ab |
| SST347 | 4.14cde | 6.09d | 4.81fghi | 7.00abcde |
| SST356 | 5.14b | 8.81a | 7.19cd | 7.48abcd |
| SST374 | 3.14f | 4.52e | 3.52i | 5.52def |
| SST387 | 3.67cdef | 7.29bcd | 7.43bcd | 7.05abcde |
| LSD (5% level) | 0.8660 | 1.397 | 1.444 | 2.141 |