Complete seed stock replacement probability | | 0.068 |

Pollen migration rate | | 0.0083 |

Number of plants per field | *N* | |

Number of ears used to replant | | 561 |

Mean ears per plant | | 3 |

Partial stock replacement probability | | 0.02 |

Mean proportion stock replaced | | 0.2 |

Pollen migration distance | | 0 km |

Seed replacement distance | | 50 km |

Distance between demes | *a* | 15 km |

Width of altitudinal cline | *w* | 62 km |

Deleterious selection coefficient | | Varies |

Beneficial selection coefficient | | Varies |

Slope of selection gradient | *α* | |

Variance in offspring number | | Varies |

Maize population density | *ρ* | |

Area of highland habitat | *A* | 270,000 km^{2} |

Mean dispersal distance | *σ* | 1.8 km |