Table 1.
Mutant class | Progeny type(s) after bud decapitation* | Progeny type(s) after pollination | Locus | No. of mutants |
---|---|---|---|---|
Wild-type apomict | Unreduced maternal seedlings (2n+0) | Maternal seedlings (2n+0) | WT | NA |
Loss of apomeiosis | Reduced polyhaploid seedlings (n+0) | Polyhaploids (n+0) | LOA | 24 |
Loss of parthenogenesis | No seed forms | Unreduced hybrids (2n+n) | LOP | 30 |
Combined class* | No seed forms | Reduced hybrids (n+n) | LOA + LOP | 25 |
Loss of autonomous endospermy† | No seed forms | Maternal seedlings (2n+0) | Unidentified | 0 |
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. WT, wild-type; NA, not applicable.
*Many of the mutants in the combined class were severely compromised and/or had very large deletions that could not be used for mapping.
†Predicted mutant class that was not observed.