Table 4.
Aflatoxin-producing potential of Aspergillus section Flavi isolates in three agroecological zones (AEZs) of Ghana
| Aflatoxin concentration (ppb)z | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| A. flavus L morphotype | S morphotype | A. parasiticus | |||||||
| AEZx | ny | B1 | ny | B1 | G1 | ny | B1 | G1 | |
| HF | 1,648 | Meanz | 299 bC | 86 | 1,193 aB | 2,706 aA | 2 | 492 bA | 159 bA |
| Range | 0–16,673 | 0-7,689 | 0–17,772 | 36–948 | 19–298 | ||||
| DS | 2,010 | Mean | 518 bB | 160 | 1,417 aA | 1,852 aC | 13 | 473 bA | 542 bA |
| Range | 0–11,429 | 11–7,935 | 19–10,692 | 111–2,843 | 133–2,360 | ||||
| SGS | 1,078 | Mean | 727 bA | 65 | 1,836 aA | 2,545 B | - | - | - |
| Range | 0–8,548 | 71–6,885 | 125–9,282 | - | - | ||||
x
HF = Humid Forest, DS = Derived Savanna, SGS = Southern Guinea Savanna.
y
n = Number of isolates.
z
Values with the same letter are not significantly different according to Fisher’s least significant difference (LSD) test (a = 0.05). Lower case letters compare either aflatoxin B1 or G1 (rows) production within AEZs. Upper case letters compare toxin-production ability of each type of fungi across AEZs (columns). B1 and G1 toxins are compared independently. Values for aflatoxin-producing potentials were log transformed prior to analysis.