I. Kataoka
In Japan, four species of Actinidia, A. arguta, A. rufa, A. polygama and A. kolomikta, grow naturally. Although these resources have long been locally utilized for fresh eating and processing, their diversity has not been surveyed systematically. The evaluation of these wild resources is important in selection and breeding. In this report, the results of a survey on the natural resources of A. arguta and A. rufa carried out from 2002 to 2009 are reviewed. In A. arguta, a wide range of ploidy variance from diploid to octaploid and the localization of the ploidy variants was observed. Several morphological characteristics were related to the ploidy level. The sugar content was generally high, but the ascorbic acid content and protease activity differed considerably among the collections. A. rufa was found only in warm southwestern regions. Most collections were diploid, but only the local collections from Kyushu contained tetraploids. A. rufa fruit were generally characterized by dark green flesh with brownish hairless skin and very low protease activity. In A. rufa, the range of variance in the morphological and compositional characteristics was relatively narrow.
Kataoka, I. (2011). DIVERSITY OF NATURAL ACTINIDIA RESOURCES IN JAPAN. Acta Hortic. 913, 77-83
DOI: 10.17660/ActaHortic.2011.913.7
Actinidia arguta, Actinidia rufa, distribution, evolution, fruit composition, morphology, ploidy

Acta Horticulturae