Table 3 Analysis of molecular variance using 1000 permutations for 226 avocado trees from eight populations (districts)
Source of variation | Sum of squares | Variance component | Percentage variation | F-Statistics | P-value |
|---|---|---|---|---|---|
A: When the sampled trees were grouped according to geographic populations (districts) | |||||
 Among populations | 115.33 | 0.258 Va | 6.08 | FST = 0.061 | < 0.0001 (Va and FST) |
 Among individuals within populations | 841.00 | 0.722Vb | 17.04 | FIS = 0.181 | < 0.0001 (Vb and FIS) |
 Within individuals | 620.00 | 3.258Vc | 76.87 | FIT = 0.231 | < 0.0001 (Vc and FIT) |
 Total | 1576.33 | 4.239 |  |  |  |
B: When the geographic populations (districts) were further grouped according to regions (Mbeya, Njombe and Songwe) | |||||
 Among groups (regions) | 43.605 | 0.085 Va | 1.98 | FCT = 0.019 | 0.02 (Va and FCT) |
 Among populations (districts) within groups | 71.721 | 0.201 Vb | 4.71 | FSC = 0.048 | < 0.0001 (Vb and FSC) |
 Among individuals within populations (districts) | 841.004 | 0.722 Vc | 16.93 | FIS = 0.181 | < 0.0001 (Vc and FIS) |
 Within individuals | 620.000 | 3.258 Vd | 76.38 | FIT = 0.236 | < 0.0001 (Vd and FIT) |
 Total | 1576.330 | 4.266 |  |  |  |
C: When the sampled trees were grouped in four altitudinal groups1 (719–1200; 1201–1600; 1601–1800; 1801–2136 masl) | |||||
 Among altitudinal groups | 45.185 | 0.107Va | 2.52 | FST = 0.025 | < 0.0001 (Va and FST) |
 Among individuals within altitudinal groups | 911.144 | 0.865Vb | 20.45 | FIS = 0.210 | < 0.0001 (Vb and FIS) |
 Within individuals | 620.000 | 3.258Vc | 77.03 | FIT = 0.230 | < 0.0001 (Vc and FIT) |
 Total | 1576.330 | 4.230 |  |  |  |