| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2016: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
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| Outline of Final Research Achievements |
In this study, we developed a method to promote the biosynthesis of sweet ingredients (SGs) in Stevia which is a sweet plant by applying environmental stimulus as stress. Specifically, we focused attention on the light environment which is comparatively easy to give as a stimulus at horticultural facilities such as plant factories. As a result, it became clear that the SGs amount improves in the R / FR 1.22 condition and the blue light condition. Regarding light intensity and irradiation pattern, DLI is effective in the NI - FL 50 conditional section which interrupts the 4 h continuous dark period of 8 h light period, and 16 h light which has been regarded as optimal for Stevia cultivation so far It was found that SGs amount increased by about 4.5 times at 3/5 DLI compared with the period. In other words, it was suggested that the SGs amount could be obtained while minimizing the input power energy in the NI - FL 50 condition.
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