In normally dioecious hop occasionally spontaneously arising monoecious plants, carrying both flower types on the same plant, occur in the progeny of certain hop crosses. Ploidy of 58 monoecious plants was assessed by flow cytometric analysis and morphologically characterised into six categories, ranging from plants having only female flowers to plants with only male inflorescences. Flow cytometric analysis revealed that a high percentage of intersexes were triploids. Since the predominantly male phenotype with a few female cones was found only among triploid intersexes, and vice versa we presumed that this particular phenotype is probably linked to triploidy. Allelic inheritance screening confirmed that the causing factor for the occurrence of triploidy in monoecious hops was mainly of paternal origin. The estimated AT frequency in hop placed it within species with a higher AT content (62.8%)
B.06 Other
COBISS.SI-ID: 557708