The Present Situation on the Distribution of Commercial Plants through <I>Aucuba japonica</I> Thunb.

DOI
  • Yano Hatsumi
    Department of Ecosystem Studies, Graduate School of Agricultural & Life Sciences, The University of Tokyo
  • Konuma Akihiro
    Department of Biological Safety, National Institute for Agro-Environmental Sciences
  • Shibaike Hiroyuki
    Department of Biological Safety, National Institute for Agro-Environmental Sciences
  • Ide Makoto
    Department of Biological Safety, National Institute for Agro-Environmental Sciences

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Other Title
  • アオキ（<I>Aucuba japonica</I> Thunb.）の遺伝的解析を通してみた緑化植物の流通の現状

Abstract

Aoki (Aucuba japonica) is a broad-leaved evergreen tree and has wide habitat in Japan; from southern west part of Hokkaido to Okinawa islands. This species has been used for greening as well as for gardening. In many cases, producers pick up some "mother trees" which have valuable characters for cloned production and selling. With that, we focused on the commercial distribution of Aoki in terms of genetic origins. We analyzed the ploidy and variations of chloroplast DNA to estimate the sources of the Aoki produced in Kyushu district. The results showed 1) in Kyushu most producers employed cuttage method 2) 74% of stock trees were introduced from outside Kyushu. From these results, one hypothesis can be suggested that other species for greening that have smaller natural distribution and be produced in commercial supply cycle have some bias on their genetic origins.

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