Volume 45 Number 2 Article 12
Year 1991 Month 4
Title: Isozyme Identification of Japanese Persimmons (Diospyros kaki L): Comparisons of Cultivars in California and Japan
Authors: D.E. Parfitt, K. Yonemori, K. Ryugo and A. Sugiura
Abstract:
There has been considerable confusion con
cerning the identity of oriental persimmon cultivars (Diospyros kaki L.) in California.
Most
scion material used for propagation in recent
years came from collections at the University of
California South Coast Field Station (SCFS),
the Wolfskill Experimental Orchards (WEO) at
the University of California, Davis, or tne United
States Department of Agriculture (USDA) Plant
Introduction Gardens at Chico, California.
To
verify cultivar identification, glucose phosphate
isomerase (GPI) and PGM isozymes patterns
were used to compare the cultivars at the SCFS
and WEO with cultivars at Kyoto University,
Kyoto, Japan.
Pollination status and astringency
were also used for evaluation of the SCFS
cultivars.
Several cultivars could not be com
pared since they are not present at Kyoto.
However, among 108 trees in the UC collections
the identity of 31 trees was verified and 13
mistakes were detected.
Extensive isozyme variability was observed between cultivars.
Isozyme analysis in persimmon was more difficult
than for other species that we have studied
(Prunus, Vitis, ana Juglans) because of the large
number of bands for GPI and PGM and the
polyploid nature of D. kaki.
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