Establishment of an efficient flowering induction system in a plant factory for a year-round wasabi seed production

2014 Fiscal Year Final Research Report

• Project/Area Number: 24580367
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Agricultural environmental engineering
• Research Institution: Shinshu University
• Principal Investigator: NOZUE Masayuki 信州大学, 学術研究院繊維学系, 教授 (30135165)
• Co-Investigator(Kenkyū-buntansha): KUBO Hiroyoshi 信州大学, 学術研究院理学系, 教授 (60205127)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 植物工場 / ワサビ / 花成誘導 / LED

Outline of Final Research Achievements

Effects of growth stage, day length and light quality on flower-bud formation in wasabi (Wasabia japonica) were examined to establish an efficient flowering induction system in a plant factory for a year-round stable seed production. We showed that flower-bud formation occurs effectively in wasabi plant cultivated more than 4 months after planting by low-temperature treatment at 4-8°C for one month and over 14 hours in the light period using LED white light (RGB). Light quality (blue, far-red and red light) has little influence on flower-bud formation, and FT, one of the essential flowering genes constitutively expressed in both light and dark periods under the above conditions.

Free Research Field

植物環境工学