Kabuchi Mandarin

Genome analysis of Ryukyuan and southern mainland Japanese citrus placed sampled kabuchii with oto and tarogayo in the yukunibu group, which the authors describe as F1 hybrids with a Kunenbo-mikan seed parent and diverse C. ryukyuensis pollen parents. Haplotype sharing supported Kunenbo-mikan as a parent of these sampled accessions. The named Kabuchi sample was collected in Okinawa (the acknowledgments identify KBU from Asahikawa, Nago City); the paper does not establish whether KBU is the same accession as NIAS 117390 in Fujii et al., so these study collections should not be conflated.^⁠[3]

Other marker studies report different accession-specific parentage findings. Shimizu et al. list Kabuchi as a candidate seed parent of tested Keraji A052 (Table 14), but a separate Kabuchi row lists Kunenbo-A as seed parent and an unidentified pollen parent (Table 15). Fujii et al. identify NIAS accession 117390 as Kabuchi and list Kunenbo [17] and Yatsushiro [56] as its candidate parents; their Table 4 states cross direction is unclear. These results apply to the study accessions and do not establish one resolved pedigree for all Kabuchi-named material.^⁠[1]⁠[2]

The parentage and ancestry display retains the existing catalog hypothesis: Kunenbo as seed parent with an unknown pollen parent, and estimated ancestry of 25% Mandarin, 25% Sweet Orange and 50% Unknown. The reviewed studies concern different sampled material and do not validate those percentages or establish matching identities across the collections.^{⁠[1]⁠[2]⁠[3]}