Table 4. Analysis of molecular variance for hierarchical groupings of 14 bitter manioc varieties grown in ADE, Oxisols and floodplain soils in communities in Manicoré, Amazonas, Brazil. The levels analyzed were: among the varieties; among varieties within soil types; among varieties within communities. d.f. = degrees of freedom.
| Source of variation | d.f. | Sum of squares | Components of variation | Percentage of variation |
|---|---|---|---|---|
| Among varieties | 13 | 74.24 | 0.54 | 18.62 |
| Within varieties | 74 | 175.41 | 2.37 | 81.38 |
| Total | 87 | 249.65 | 2.91 | |
| Among soil types | 2 | 15.61 | 0.05 | 1.84 |
| Among varieties within soil types | 11 | 58.63 | 0.50 | 17.20 |
| Within varieties | 74 | 175.41 | 2.37 | 80.97 |
| Total | 87 | 249.65 | 2.92 | |
| Among communities | 4 | 31.30 | 0.12 | 4.24 |
| Among varieties within communities | 9 | 42.94 | 0.44 | 14.95 |
| Within varieties | 74 | 175.41 | 2.37 | 80.81 |
| Total | 87 | 249.65 | 2.93 |