Cytogenetical Investigations in Musaceae IV

Cytomorphology of an interspecific triploid hybrid of Musa acuminata Colla.×M. rubra Wall

Abstract

Cytomorphology of interspecific hybrids of Musa acuminata×M. rubra showed 2n=33 chromosomes. The hybrid had intermediate morphological characters. The occurrence of triploids in diploid×diploid cross suggested formation of unreduced female gametes in M. acuminata. The absence of unreduced male gamete formation in the same indicated differences in male and female gametogenesis in same species. Formation of 11 bivalents per PMC in hybrids apparently suggests complete pairing of all M. acuminata chromosomes and lack of homology with M. rubra chromosomes.