Imported
UCR reports that Seedless Kishu budwood from Japan was received by the Citrus Variety Collection in 1983. This records the collection's receipt of accession material, not the date or origin of the seedless mutation.
Seedless Kishu Mandarin
UCR reports that Seedless Kishu budwood from Japan was received by the Citrus Variety Collection in 1983. This records the collection's receipt of accession material, not the date or origin of the seedless mutation.
The chapter describes Seedless Kishu as a mutant of seedy Kishu from Japan. It reports the seedless trait as apparently monogenic and dominant, but gives no discovery date and does not establish that the mutation was spontaneous.
Sources: [2]