Principles of Plant Breeding (2+1)

Uses of incompatibility

1. Incompatibility may be used in hybrid seed production withoutEmasculation as self fertilization will not take place.E.g.,
(a) Leffel (1963) suggested production of double cross hybrid (S1S2 x S1S2) x (S3S3 x S4S4) in red clover utilizing for incompatibility alleles.
(b) Thompson (1964) Suggested the use of S gene for seed production of double cross hybrid Kale, individual lines may bemaintained by selfing either in bud or late stage.
2. Even this system is utilized by fruit breeders where so incompatible varieties are more successful in cultivation.E.g., In cherry