Intraspecific unilateral incompatibility inVicia fabaL.
✍ Scribed by M. M. F. Abdalla
- Publisher
- Springer
- Year
- 1977
- Tongue
- English
- Weight
- 814 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-5752
No coin nor oath required. For personal study only.
✦ Synopsis
Unilateral incompatibility was discovered when crossing was attempted between different self-compatible types and subspecies of V. faba. Crossing in the direction female less self-fertile x male more self-fertile failed, whereas the reciprocal-crossing succeeded. Unilateral incompatibility developed with the evolution of less fertile and large seeded field bean types. How a cross fertilized (and self-incompatible) system may develop from a self fertilized one is discussed.The unilateral incompatibility in V. faba and other plant species is compared. The two-power competition hypothesis can explain all kinds of unilateral incompatibility reported so far in the literature. Breeding field beans for improved self-fertility is discussed.