Table 2.
Combined variance analysis on 33 sweet potato in three environments.
| Source | df | Yield (tons.ha−1) |
Sweetness (oBrix) |
Moisture Content (%) |
Tuber Diameter (cm) |
Tuber Length (cm) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SS | %TSS | SS | %TSS | SS | %TSS | SS | %TSS | SS | %TSS | |||||||
| Genotypes (G) | 32 | 17656.00 | ** | 34.41 | 48.90 | ** | 39.66 | 5969.00 | ** | 88.72 | 139.80 | ** | 32.79 | 812.00 | * | 26.33 |
| Environments (E) | 2 | 2643.00 | * | 5.15 | 237.40 | * | 19.34 | 35.00 | * | 0.52 | 7.40 | * | 1.74 | 4.00 | ns | 0.13 |
| Block (E) | 6 | 2850.00 | ** | 5.55 | 12.20 | ns | 0.99 | 20.00 | ns | 0.30 | 2.90 | ns | 0.68 | 30.00 | ns | 0.97 |
| GEIs | 64 | 28157.00 | ** | 54.88 | 491.20 | ** | 40.01 | 704.00 | ** | 10.46 | 276.30 | ** | 64.80 | 2238.00 | ** | 72.57 |
| Error | 192 | 3506.00 | * | 310.10 | * | 409.00 | * | 205.60 | * | 3086.00 | * | |||||
| Mean | 25.18 | 8.73 | 65.78 | 5.08 | 18.67 | |||||||||||
| SD | 13.58 | 2.26 | 4.85 | 1.46 | 4.50 | |||||||||||
| CV (%) | 16.99 | 13.88 | 1.78 | 20.52 | 28.28 | |||||||||||
*p < 0.05; **p < 0.01; SD = Standard Deviation; CV = Coefficient of Variations; SS = Sum of Square; GEIs = Genotype-by-environment interactions.