Plant Biotechnology
Online ISSN : 1347-6114
Print ISSN : 1342-4580
Short Communications
Red-purple flower due to delphinidin 3,5-diglucoside, a novel pigment for Cyclamen spp., generated by ion-beam irradiation
Emiko KondoMasayoshi NakayamaNaoko KameariNatsu TanikawaYasumasa MoritaYusuke AkitaYoshihiro HaseAtsushi TanakaHiroshi Ishizaka
Author information

2009 Volume 26 Issue 5 Pages 565-569


We previously bred fragrant cyclamen cultivars by interspecific hybridization between cultivars of Cyclamen persicum and the wild species Cyclamen purpurascens. One of these fragrant cultivars, Kaori-no-mai, blooms purple flowers containing malvidin 3,5-diglucoside as the major anthocyanin. Here, we irradiated etiolated petioles of Kaori-no-mai with a 320-MeV carbon-ion beam at 0–16 Gy to increase flower color variation by mutation. Some of the M2 plants derived from self-pollination of M1 plants irradiated at 2 Gy were flower-color mutants that retained desirable flower shape, flower size, and leaf color. One of the mutants bloomed novel red-purple flowers, the major anthocyanin of which was delphinidin 3,5-diglucoside. Loss of methylation activity at the anthocyanin 3′- and 5′-hydroxyl groups with little influence on anthocyanin concentration was attributed to the mutation. Because the major anthocyanins in flowers of Cyclamen spp. were previously restricted to malvidin, peonidin, and cyanidin types, the generation of a cyclamen containing mostly the delphinidin-type anthocyanin is an important breakthrough in cyclamen breeding. We expect this mutant to become not only a commercial cultivar itself, but also a valuable genetic resource for cyclamen breeding.

Information related to the author
© 2009 by Japanese Society for Plant Cell and Molecular Biology
Previous article