Chromosome elimination and mutation in tetraploid somatic hybrids ofSolanum tuberosum andSolanum phureja.
The hybridity of eleven somatic hybrids between a diploidS. tuberosum and a diploidS. phureja clone could be verified because the parent karyotypes differed in their C-banding patterns. The hybrids were hypotetraploid and some carried structurally rearranged chromosomes and/or minute centric fragments. The nucleolar chromosomes ofS. phureja were eliminated preferentially. The function of the remaining nucleolar organizer regions was not suppressed. Nuclear DNA content was correlated with the hypotetraploid chromosome numbers.
Department of Genetics, University of Groningen, P.O. Box 14, NL 9750 AA, Haren, The Netherlands.
L P
LP
Pijnacker
M A
MA
Ferwerda
K J
KJ
Puite
J G
JG
Schaart