Introgression of alleles of the isozymic locus glucosephosphate isomerase-2 (GPI-2) from the CC genome of Brassica carinata to the CC genome of Brassica alboglabra and their independent segregation from seed colour

A yellowish brown-seeded Brassica alboglabra was resynthesized from a (B. a lboglabra X Brassica carinata) X B. alboglabra cross, followed by self-poll ination. The resynthesized B. alboglabra lost the allele of the isozymic lo cus glucosephosphate isomerase-2 (GPI-2) from natural B. alboglabra, which was replaced by an allele from the corresponding genome in B. carinata. A s imple Mendelian segregation of these two alleles was observed in the F-2 po pulation of a natural x resynthesized B. alboglabra cross. Furthermore, the se two alleles segregated independently from the seed colour.