New Natural Hybrid of Arisaema (Araceae), Distributed around Mt. Yatsuzura, in Shikoku, western Japan

HAYAKAWA HIROSHI, MATSUYAMA KANAKO, NOZAKI-MAEDA AYAKO, HAMACHI HIDENORI, MINAMIYA YUKIO, ITO KATSURA, YOKOYAMA JUN, ARAKAWA RYO, FUKUDA TATSUYA

doi:10.18942/apg.kj00008580362

New Natural Hybrid of Arisaema (Araceae), Distributed around Mt. Yatsuzura, in Shikoku, western Japan

DOI 参考文献13件

HAYAKAWA HIROSHI

Faculty of Agriculture, Kochi University:(Present office)National Institute for Agro-Environmental Sciences
MATSUYAMA KANAKO

Graduate School of Integrated Arts and Sciences, Kochi University
NOZAKI-MAEDA AYAKO

Kochi Prefectural Makino Botanical Garden
HAMACHI HIDENORI

Faculty of Agriculture, Kochi University
MINAMIYA YUKIO

Faculty of Agriculture, Kochi University
ITO KATSURA

Faculty of Agriculture, Kochi University
YOKOYAMA JUN

Faculty of Science, Yamagata University
ARAKAWA RYO

Faculty of Agriculture, Kochi University
FUKUDA TATSUYA

Faculty of Agriculture, Kochi University

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説明

Morphologically intermediate plants between Arisaema tosaense and A. undulatifolium subsp. uwajimense were recently found in Ehime and Kochi prefectures, Shikoku, Japan. The putative hybrids have the reproductive characteristics of A. tosaense, but purplish-dark brown, short pseudostems similar to A. undulatifolium subsp. uwajimense. Molecular analysis of nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) region using PCR-RFLP indicates that these putative hybrids have a combined pattern of the two putative parental species. The chloroplast DNA (cpDNA) trnL intron sequences of all the putative hybrids and A. tosaense were identical. The results suggest that the plants are hybrids between A. tosaense and A. undulatifolium subsp. uwajimense and were formed by gene exchange via pollen grains transferred from A. undulatifolium subsp. uwajimense to A, tosaense.