Table 1. Interspecies F2 crosses between C. rhenanus and C. perifretum were used for map construction and to identify the genetic basis of sex.
| Cross type | Mapping family | Total | Map construction | Sex mapping | Males | Females | Sex ratio | Balanced sex ratio(P-value) |
|---|---|---|---|---|---|---|---|---|
| Broel(♂) × WN(♀) | ZG11 | 104 | 104 | NA | NA | NA | NA | NA |
| ZG18 | 76 | 76 | NA | NA | NA | NA | NA | |
| ZG33 | 52 | NA | 52 | 24 | 28 | 0.462 | 0.579 | |
| ZG42 | 97 | NA | 97 | 51 | 46 | 0.526 | 0.612 | |
| WN(♂) × Broel(♀) | ZG40 | 86 | 58 | 28 | 18 | 10 | 0.643 | 0.131 |
| ZG46 | 75 | 55 | 20 | 15 | 5 | 0.750 | 0.025 | |
| LB(♂) × Naaf(♀) | ZG26 | 117 | 96 | 21 | 10 | 11 | 0.476 | 0.827 |
| ZG32 | 115 | 98 | 17 | 10 | 7 | 0.588 | 0.467 | |
| ZG35 | 38 | NA | 38 | 21 | 17 | 0.553 | 0.516 | |
| ZG38 | 70 | 70 | NA | NA | NA | NA | NA | |
| Naaf(♂) × LB(♀) | ZG39 | 68 | 68 | NA | NA | NA | NA | NA |
The cross type indicated the origin of the parental populations (Broel, Naaf, LB, WN) and the gender of the parental generation. Individual mapping families are listed together with the total number of offspring that were raised and used for map construction or to QTL map sex. The numbers of males and females are given for each mapping family. Sex ratios were found to be significantly skewed toward a male excess in family ZG46, but this pattern was not generally observed.