Table 1.
Summary of QTL analysis for mean petal number, standard error and Levene’s statistic over 24 flowers
| Trait | Population mean | H2 | Chr2, 4·7 cM | Chr4, 93·9 cM | Chr5, 11·15 cM | Chr5, 61·0 cM | Chr8, 0·0 cM |
|---|---|---|---|---|---|---|---|
| muPN | 2·48 | 0·86 | 0·76 (14·5) | −0·52 (6·8) | 0·40 (4·1) | 0·55 (7·7) | −0·94 (22·1) |
| s.e.m. | 0·25 | * | −0·33 (2·7) | – | – | −0·41 (4·2) | – |
| LS | 0·39 | 0·58 | −0·29 (2·1) | – | – | −0·34 (2·8) | – |
QTL effects are shown for homozygous substitution of Ox alleles with Wa alleles.
The percentage of variance explained by the respective QTL effect is provided in parentheses.
Non-significant effects are indicated by ‘–’.
muPN, average petal number of up to 24 flowers per plant; s.e.m., standard error of the mean muPN per RIL; LS, Levene’s statistic.
Broad-sense heritability (H2) is estimated as the ratio of genetic variance to total phenotypic variance.
*H2 is not calculated for the trait s.e.m. because it is problematic to estimate the genetic variance component.