| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
The Okinawa Islands, located at the center of Okinawa prefecture, comprise a unique subtropical region of Japan. In total, 27 tree species have been designated for preservation as an initiative to reforest public lands. The initiative will promote various woodland creations including forest plantations and subcanopy planting, use of forest products for natural fertilizers and other enterprises that will stimulate forest reclamation. However, we have little knowledge regarding the reproductive characteristics, such as the flowering, fruit setting, pollination, and dispersal for most of the designated tree species. To preserve the subtropical forests, which comprise various tree species, and to enhance the supply of seeds as well as to ensure safe renewal, it is urgently required to elucidate a life cycle which mainly focuses on the reproductive traits of each comprised trees. In this study, to elucidate the reproductive traits of subtropical trees, we studied the flowering phenology, pollination, and fruit setting mechanisms of four useful tree species. The knowledge gained from this study will help contribute to the efficient supply of seeds of useful trees and offer ultimately significant results for preserving and reforesting in the Okinawa Islands by the production of nursery stock using local seeds for new developments, or for systematization of fundamental information about the techniques of seed production.
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