Differences of Flowerings and Bulb Growth among Accessions of Micropropagated Bulblets in Lilium japoniucm Thunb

• Published in: Engeigaku kenkyuu Vol. 1; no. 2; pp. 93 - 96
• Main Authors: Nishimura, Hidehiro, Atsumi, Shigeaki
• Format: Journal Article
• Language: Japanese
• Published: Kyoto-City THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE 2002; Japan Science and Technology Agency
• ISSN: 1347-2658; 1880-3571
• DOI: 10.2503/hrj.1.93

Eighteen accessions of Lilium japonicum were collected in 12 prefectures of five regions of Japan. One hundred thirty-two bulblets of the accessions, which were prepared through tissue culture, were cultured in containers for five years. Though one (MHN) of the accessions from Wakayama Prefecture flowered in the first year, the difference of flowering ages did not correlate with the prefectures and/or regions. Six accessions from four southern prefectures, i.e., Miyazaki, Tokushima, Wakayama and Nara Prefectures, set many flowers in the fifth year of cultivation. However, the bulb weights were differed among the multiflorous accessions. One accession (KYY) from Nara Prefecture had a large bulb, whereas an accession (BNK) from Tokushima Prefecture had a small bulb. The weight of the bulbs after the fifth year correlated with the ratio of additional weight relative to initial weight in the first year of cultivation. Therefore, selection based on bulb growth will result in the loss of genetic resources among small bulbs for garden varieties.