TABLE 5.
Effect of maize kernel washing treatments on competitive advantage conferred to the first A. flavus isolate to contact maize kernels
| Kernel washb | Inoculum suspensionc | % YV04 DNA (SE)a |
|
|---|---|---|---|
| Kernels | Conidia | ||
| Tween 80 | Water | 81 (3) a | 78 (2) a |
| Water | Water | 77 (2) ab | 68 (3) b |
| None | Water | 74 (3) b | 69 (2) b |
| Hexane | Water | 75 (2) b | 67 (2) b |
| Ethanol | Water | 70 (2) b | 66 (3) b |
| None | Tween 80 | 72 (4) b | 65 (3) b |
a
Proportion of total A. flavus DNA comprised of that of YV04. Isolate YV04 was inoculated 1 h prior to inoculation of CG136. A. flavus DNA from kernel-infecting hyphae and conidia from kernel surfaces were analyzed separately. Means followed by the same letter are not significantly different by Fisher's LSD test.
b
Kernels were submerged in each of the designated solutions and washed by gentle agitation. “None” indicates kernels were not subjected to a washing treatment prior to inoculation.
c
Conidial inoculum for each isolate was suspended in either water or 1% Tween 80.