Table 1.
Partitioning of genetic variance. AMOVA was performed at three hierarchical levels to test the differentiation between 374 individual samples from 32 populations and six species. The table shows: degrees of freedom (df), sum of squared deviations, variance component estimates, percentages of total variance contributed by each component, and the probability of obtaining a more extreme component estimate by chance alone (p). p-Values were estimated with 1023 permutations.
| Source of Variation | df | Sum of Squares | Variance Components |
Percentage of Variation |
p-Values |
|---|---|---|---|---|---|
| Among species | 5 | 491.962 | 0.23949 | 1.06 | n.s. |
| Among all populations within species | 26 | 2234.717 | 5.96533 | 26.50 | <0.0001 |
| Within all populations | 342 | 5576.420 | 16.30532 | 72.44 | <0.0001 |
| Total | 373 | 8302.599 | 22.51014 | ||
| Among diploids | 1 | 99.78 | 2.26958 | 11.19 | <0.0001 |
| Within diploids | 70 | 1260.250 | 18.00357 | 88.81 | <0.0001 |
| Total diploids | 71 | 1359.958 | 20.27315 | ||
| Among tetraploids | 25 | 2213.633 | 6.18362 | 26.99 | <0.0001 |
| Within tetraploids | 276 | 4617.503 | 16.73008 | 73.01 | <0.0001 |
| Total tetraploids | 301 | 6831.136 | 22.91371 |