Table 2: Morphological characteristics of Alternaria solani isolates collected from Kirinyaga, Kiambu and Kajiado counties, Kenya.
|
Characteristic |
Kirinyaga (n = 35) |
Kiambu (n = 30) |
Kajiado (n = 31) |
Overall (n = 96) |
|
Conidia shape |
|
|
|
|
|
Ellipsoidal |
68.5 (24) |
40 (12) |
51.6 (16) |
54.2 (52) |
|
Obclavate |
28.6 (10) |
33.3 (10) |
45.7 (14) |
35.4 (34) |
|
Obvoid |
2.9 (01) |
26.7 (08) |
3.2 (01) |
10.4 (10) |
|
Beaks on conidia (% isolates) |
|
|
|
|
|
Isolates with beaked conidia |
60 (21) |
60 (18) |
48.4 (15) |
56.3 (54) |
|
Isolates without beaked conidia |
40 (14) |
40 (12) |
51.6 (16) |
43.7 (42) |
|
Conidia dimensions |
|
|
|
|
|
Av. length (µm ± SD) |
20.48 ± 3.81c |
16.72 ± 2.34a |
18.00 ± 2.38b |
18.44 ± 3.29 |
|
Av. width (µm ± SD) |
11.87 ± 1.89b |
11.22 ± 1.96a |
12.13 ± 1.77a |
11.78 ± 2.24 |
|
Av. beak length (μm ± SD) |
10.26 ± 3.85b |
13.99 ± 3.62a |
8.98 ± 1.51c |
10.97 ± 2.76 |
|
Septations |
|
|
|
|
|
No. of transverse septa (range) |
2-5 |
2-5 |
2-5 |
2-5 |
|
No. of longitudinal septa (range) |
0-2 |
0-2 |
0-2 |
0-2 |
|
No. of beak septa (range) |
0-2 |
0-2 |
0-2 |
0-2 |
*Means followed by similar letters in rows are not significantly different at α = 0.05. Figures in parentheses indicate frequencies for categorical variable.