Table 2. Phenotypes of Fusarium asiaticum wild-type strain 2021, resistant strain Y2021A, and mutants in terms of growth, conidiation, and pathogenicity.a.
Strain | Growth rateb (cm/day) | Conidia produced (×105/ml) | Percentage of diseased spikelets (%)c | Lesion length on stem (cm)d |
---|---|---|---|---|
2021 | 2.55±0.02A | 44.75±6.72A | 94.55±1.20A | 2.61±0.28A |
D2021FaMyo2B-93 | 2.31±0.05B | 3.47±1.03C | 17.59±6.68B | 0.52±0.19B |
Δ2021Famyo2-7 | 1.36±0.08D | 0.25±0.07D | 2.84±0.40C | 0.06±0.07C |
Y2021A | 2.58±0.03A | 42.00±8.49A | 96.58±1.30A | 2.78±0.26A |
DY2021AFaMyo2B-3 | 2.21±0.05C | 6.15±1.48D | 19.56±5.87B | 0.43±0.16B |
DY2021AFaMyo2B-3C | 2.52±0.04A | 31.62±6.24B | NA | NA |
ΔY2021AFamyo2-8 | 1.43±0.01D | 0.18±0.04C | 2.92±0.18C | 0.06±0.08C |
ΔY2021AFamyo2-8C | 2.49±0.06A | 40.05±5.37A | NA | NA |
aValues are means and standard deviations. Means in a column followed by the same letter are not significantly different (P = 0.01).
bGrowth rate and conidiation were measured after incubation of three replicates for 3 and 7 days, respectively. Growth rate was measured on PDA plates. Conidiation was measured in flasks containing MLB.
cPercentage of diseased spikelets per spike 14 days after inoculation. Thirty spikes were inoculated for each strain.
dThe length of brown lesions on diseased stems 14 days post inoculation. Ten coleoptiles were inoculated for each strain. NA, not analysis.