Analysis of F1
PMCs meiosis
A high frequency of univalent chromosomes and a moderate
frequency of multivalent chromosomes appeared in F1 from
crossing CS-6E′′ with CS-2C′′. The number of univalents
exceeded the theoretical values. In F1 progenies, we observed
a large number of chromosome fragments, chromosome
bridges and laggards at anaphase I and II, and a large number
of micronuclei in telophase and tetrad phase. Cytoplasmic
multipolar division (up to seven divided spores) was also
observed (35). Such aberrations are mainly caused by
chromosome splitting and translocation induced by the Gc
chromosome 2C.