Abstract
The segregation of self-compatibility from L. temulentum was examined in backcross generations derived from hybrids between this species and the self-incompatible species, L. perenne and L. multiflorum, the latter being used as recurrent parents. Segregation patterns for self-compatibility were determined by percentage self seed set and by in-vitro self-pollination scores in the resulting backcross generations. Self-compatibility in L. temulentum is controlled in a gametophytic manner by a single gene mutation of either the Z locus or a locus tightly linked to it. Self-compatibility can be fixed in the homozygous form (i.e. 100 per cent pollen-tube growth on selfed stigmas) by selfing half compatible backcross plants. The S locus is still present in L. temulentum and functions when combined with a functional Z locus derived from either L. perenne or L. multiflorum. This has evolutionary significance for the relationship of the self-compatible and -incompatible Lolium species.
| Original language | English |
|---|---|
| Pages (from-to) | 71-78 |
| Number of pages | 8 |
| Journal | Heredity |
| Volume | 68 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1992 |
Keywords
- incompatibility
- Lolium multiflorum
- Lolium perenne
- Lolium temulentum
- self-compatibility
- Incompatibility
- Selfcompatibility