Figure 1.
Source and hybridity indices for the various generations of a line cross population.
The vertical axis indicates each generation's source index. A source index value of +1 indicates that all genes originate with P1 while −1 indicates that all genes originate with P2. The horizontal axis indicates a generation's hybridity index such that +1 indicates heterozygosity at every locus, while −1 indicates homozygosity at all loci. The RIL values represent an ideal in which an infinite number of generations of selfing preceded measurement of the RIL population. Real RIL populations asymptotically approach this value as the number of generations of inbreeding increases.
Table 1.
Source and hybridity indicies and coefficients of directional genetic effects.
Table 2.
Comparison of variances of directional genetic effects with and without recombinant inbred lines.