Chromosome pairing affinities in interspecific hybrids reflect phylogenetic distances among ladys slipper orchids (Paphiopedilum)

摘要

Background and AimsLady's slipper orchids (Paphiopedilum) are of high value in floriculture, and interspecific hybridization has long been used for breeding improved cultivars; however, information regarding the genome affinities of species and chromosome pairing behaviour of the hybrids remains almost unknown. The present work analyses the meiotic behaviour of interspecific hybrids by genomic in situ hybridization and cytologically evaluates the genomic relationships among parental species.