Characterization of ploidy variants identified in the wild resources of Actinidia arguta relative species to kiwifruit

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Ploidy variants of wild A.arguta specifically occurred in Japan, were characterized. A wide range of ploidy variance from diploid to octaploid was observed. Geographic distribution of the variants was determined showing the localization of the higher ploidy population in Tohoku area. Morphology, fruit composition and reproductive character of the ploidy variants were determined. Cross compatibility of the ploidy variants with kiwifruit (A.deliciosa) was observed. The characteristics of the cross seedlings showed the potential of the variants as breeding materials.