| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
The effects of weather and soil environmental conditions on pollen cone production of hinoki cypress were investigated to obtain information contributing to pollinosis control. In the stands of Kyoto Prefecture, pollen cone production of hinoki cypress tended to be greater as soil nitrogen availability and soil moisture content increased. Temperature and precipitation were important climatic conditions during flower bud formation in the stands of Kyoto Prefecture, while only precipitation had an effect in the stands of Kochi Prefecture. This suggests that the effect of climatic conditions on pollen cone production of hinoki cypress varies by region. Higher temperatures during flower bud formation promoted pollen cone production of hinoki cypress, while precipitation had a suppressive effect, suggesting that the impact of precipitation on flower bud formation is stronger under elevated temperature conditions.
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