Articles
HIGH FREQUENCY PLOIDY VARIATION OBSERVED IN SEEDLINGS OF A HEXAPLOID PERSIMMON CULTIVAR ‘FUJIWARAGOSHO’
Article number
833_20
Pages
131 – 134
Language
English
Abstract
Kaki or Japanese persimmon (Diospyros kaki Thunb.) is a polyploid fruit tree species.
Although most commercial kaki cultivars grown in Japan are hexaploid (2n=6x, x=15), there are a few nonaploid seedless cultivars such as Hiratanenashi (2n=9x). During our survey on the ploidy levels of seedlings of several cultivars of persimmon that were grown in the experimental farm of Kyoto University, we found that a hexaploid Fujiwargosho tree produced a very high frequency of seedlings whose ploidy levels were more than normal hexaploid, mainly nonaploid or dodecaploid.
In this study, we investigated the ploidy levels of seedlings from the seeds obtained from several different trees of Fujiwaragosho grown at different locations in Japan in different years and confirmed that Fujiwaragosho as a cultivar specifically produces seedlings with unusal ploidy levels.
Although most commercial kaki cultivars grown in Japan are hexaploid (2n=6x, x=15), there are a few nonaploid seedless cultivars such as Hiratanenashi (2n=9x). During our survey on the ploidy levels of seedlings of several cultivars of persimmon that were grown in the experimental farm of Kyoto University, we found that a hexaploid Fujiwargosho tree produced a very high frequency of seedlings whose ploidy levels were more than normal hexaploid, mainly nonaploid or dodecaploid.
In this study, we investigated the ploidy levels of seedlings from the seeds obtained from several different trees of Fujiwaragosho grown at different locations in Japan in different years and confirmed that Fujiwaragosho as a cultivar specifically produces seedlings with unusal ploidy levels.
Publication
Authors
R. Tao, M. Gao, T. Esumi, Y. Kitamura, A. Yamada
Keywords
hexaploid, kaki, ploidy breeding, seedless, unreduced gamete
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