Journal of the Japanese Society for Horticultural Science
Online ISSN : 1880-358X
Print ISSN : 0013-7626
ISSN-L : 0013-7626
Variations in Fruit Ripening Time, Fruit Weight and Soluble Solids Content of Oriental Persimmon Cultivars Native to Japan
Masahiko YamadaHiroyasu YamaneAkihiko SatoNobuyuki HirakawaRenzi Wang
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1994 Volume 63 Issue 3 Pages 485-491

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Abstract

One hundred and eighty-eight cultivars of oriental persimmon (Diospyros kaki Thunb.) native to Japan were evaluated for fruit ripening time (FRT), fruit weight (FW), and soluble solids content (SSC). A high heritability for each of these traits was conserved in this population; the overall mean and SD of FRT, FW and SSC were early to mid-November and 15 days, 200 g and 72 g, and 17.0% and 1.7%, respectively. Subgroups of PCA (pollination constant-astringent) and PVNA (pollination variant-nonastringent) showed wide variations for each trait. As to mean values, the PVNA group had slightly earlier FRT and higher SSC than the PCA group but their FW were similar. PCNA (pollination constant-nonastringent) group showed the latest FRT and the SSC was intermediate between those of PCA and PVNA groups; whereas, PVA (pollination variant-astringent) had the earliest FRT with the lowest SSC. The PCNA and PVA groups had larger fruits than the PCA and PVNA groups. Variations in FRT and SSC of PCNA were characteristically small, which suggest that these cultivars evolved later than the others.
There is a weak, negative correlation between FW and SSC and a weak, positive one between FRT and FW. The percentage of early ripening cultivars was higher in cultivars which originated in the northern areas of Japan in contrast to those developed in southern regions.

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