Table 4. Cytonuclear disequilibria in Irtysh River hybrid zones of Populus tremula and P. alba.
| Locus | Whole data set |
P. × canescens |
||||||
|---|---|---|---|---|---|---|---|---|
| D1 (TT/Ht) | D2 (TA/Ht) | D3 (AA/Ht) | D (T/Ht) | D1 (TT/Ht) | D2 (TA/Ht) | D3 (AA/Ht) | D (T/Ht) | |
| GCPM114 | 1.000*** | 0.471*** | −0.844*** | 0.893*** | 1.000 | 0.331** | −0.517*** | 0.564* |
| GCPM1158 | 0.971*** | 0.393*** | −0.837*** | 0.882*** | 1.000 | −0.147 | −0.074 | 0.206 |
| GCPM124 | 0.968*** | 0.433*** | −0.774*** | 0.833*** | 1.000 | 0.001 | −0.122 | 0.217 |
| GCPM1252 | 0.835*** | 0.636*** | −0.745*** | 0.777*** | 0.480** | −0.342 | −0.582* | 0.516*** |
| GCPM1255 | 0.970*** | 0.307*** | −0.884*** | 0.914*** | 0.355 | 0.220 | −0.457 | 0.434 |
| GCPM1260 | 0.506*** | 0.250*** | −0.818*** | 0.654*** | 0.052 | 0.040 | −0.209 | 0.118 |
| GCPM1274 | 0.839*** | −0.043 | −0.632*** | 0.721*** | 0.417 | 0.599 | −0.494 | 0.466 |
| GCPM139 | 1.000*** | 0.659*** | −0.823*** | 0.874*** | 1.000 | 0.554*** | −0.617*** | 0.635*** |
D1, D2, D3, genotypic disequilibria; D, allelic disequilibria; TT, nuclear genotypes typical of P. tremula; TA, nuclear genotypes heterozygous for T and A alleles; AA, nuclear genotypes typical of P. alba; Ht, plastid DNA haplotype typical of P. tremula; Fisher’s exact test: *0.01 < P < 0.05, **0.001 < P < 0.01, ***P < 0.001.