Table 2.
Segregating population: P4 (sexual) = C4D (apomict)
Segregant class | Progeny type(s) after bud decapitation | Progeny type(s) after pollination | Proposed genotype | No. of segregants |
---|---|---|---|---|
Apomict: apomeiotic, not requiring fertilization | Unreduced maternal seedlings (2n+0) | Maternal seedlings (2n+0) | AaaaPppp | 13 |
Meiotic, not requiring fertilization | Reduced polyhaploid seedlings (n+0) | Polyhaploids (n+0) | aaaaPppp | 48 |
Apomeiotic, requiring fertilization | No seed forms | Unreduced hybrids (2n+n) | Aaaapppp | 9 |
Sexual: meiotic, requiring fertilization | No seed forms | Reduced hybrids (n+n) | aaaapppp | 22 |
Nomenclature in parentheses follows the convention of Harlan and de Wet (56) in which the nuclear state of the egg is represented on the left of the addition sign and the nuclear state of the sperm is on the right.