Contrast | |||||||||
---|---|---|---|---|---|---|---|---|---|

c_{1} | 1 | 1 | 1 | 0 | 0 | 0 | −1 | −1 | −1 |

c_{2} | 1 | 1 | 1 | −2 | −2 | −2 | 1 | 1 | 1 |

c_{3} | 1 | 0 | −1 | 1 | 0 | −1 | 1 | 0 | −1 |

c_{4} | 1 | −2 | 1 | 1 | −2 | 1 | 1 | −2 | 1 |

is the genotypic mean of the backcross progenies from F

_{2}parents with marker genotype*g*(see appendix a) backcrossed to parental line*j*(*j*= 2, 1). Only means are presented, and the coefficients for are the same as for for*c*_{1}–*c*_{4}. Contrasts*c*_{5}–*c*_{8}are*c*_{5}=*c*_{1}×*c*_{3},*c*_{6}=*c*_{1}×*c*_{4},*c*_{7}=*c*_{2}×*c*_{3}, and*c*_{8}=*c*_{2}×*c*_{4}. Contrast*c*_{9}has*u*_{9g1}= 1 and*u*_{9g2}= −1. Contrasts*c*_{10}–*c*_{17}have the same coefficients as*c*_{1}–*c*_{8}for , respectively; for the coefficients are the same but with opposite signs.