Germination requirements and the relationships between them and habitats of two kinds of Trillium genus as the landscape material in the north area of Japan

2016 Fiscal Year Final Research Report

• Project/Area Number: 26450488
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Hokkaido University
• Principal Investigator: KONDO Tetsuya 北海道大学, 農学研究院, 教授 (10153727)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: エンレイソウ / オオバナノエンレイソウ / 種子 / 休眠 / 発芽特性 / 分布域

Outline of Final Research Achievements

Trillium camschatcense distributing in Hokkaido and Trillium apetalon distributing from mountainous region in Kyusyu to Hokkaido are considered as the promising landscape materials in Hokkaido. Germination of seeds of both species were tested under the same conditions. Both seeds have Morphophysiological dormancy. However, under the temperatures simulated Sapporo, radicles emerged from about half of seeds in T. apetalon during the summer in seeded year, and shoots emerged in the next spring. Radicles emerged from the remaining seeds after the winter. Radicles did not emerged from seeds of T. camschatcense if they had not experienced winter temperature.These mean that low temperature requirement for radicle emergence in T. apetalon is less than T. camschatcense. This could be one of the reasons why distribution of T. apetalon extend to southern region than T. camschatcense.

Free Research Field

農学