MORPHOLOGICAL DIVERSITY OF LILIUM AURATUM VAR. PLATYPHYLLUM IN IZU ARCHIPELAGO, JAPAN
Lilium auratum var. platyphyllum (syn. L. platyphyllum) has the largest flower in the genus Lilium. It is indigenous to Izu archipelago of Japan. This species is critically endangered and listed in the Tokyo Red Data Book, however, its genetic diversity has not been analyzed yet. To make a conservation scheme of this endangered species, morphological diversity was investigated in this study. 49 bulbs of L. auratum var. platyphyllum were collected from four islands (Izu-Oshima, Kouzu-shima, Miyake-jima and Mikura-jima) and cultured at Meiji University greenhouse. 28 morphological characters were recorded in budding and flowering time. These data was used for principal component analysis and cluster analysis by using SPSS software. Both analyses showed two groups which were red spot group and yellow spot group by their petal character. However, these two groups were not related to islands. On the other hand, Miyake-jima population was identified by green stigma color in yellow spot group. Kouzu-shima population possessed more uniform characters than other island populations. These results suggested that morphological diversity is different among islands.
Yamamoto, S., Kikuchi, T. and Handa, T. (2014). MORPHOLOGICAL DIVERSITY OF LILIUM AURATUM VAR. PLATYPHYLLUM IN IZU ARCHIPELAGO, JAPAN. Acta Hortic. 1025, 127-132
lily, principal component analysis, geographical types, endangered species, conservation program