| Budget Amount *help |
¥140,790,000 (Direct Cost: ¥108,300,000、Indirect Cost: ¥32,490,000)
Fiscal Year 2020: ¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000)
Fiscal Year 2019: ¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
Fiscal Year 2018: ¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2017: ¥23,270,000 (Direct Cost: ¥17,900,000、Indirect Cost: ¥5,370,000)
Fiscal Year 2016: ¥40,430,000 (Direct Cost: ¥31,100,000、Indirect Cost: ¥9,330,000)
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| Outline of Final Research Achievements |
In this study, we produced a high-yielding rice with higher N-use efficiency by improving the photosynthetic capacity by overproduction of Rubisco which is the photosynthetic CO2 fixation enzyme, as well as by increasing the sink capacity. As a source capacity enhancement, multiple transgenic rice lines were produced from Rubisco-overproduced rice. At the same time, as a sink enlargement, near isogenic rice lines were produced by introducing a large grain gene from large-grain high-yielding rice, Akita 63. The grain yields of both modified rice lines were examined in an experimental rice field. The yield was increased by up to 28% in the former and up to 20% in the latter. Finally, a hybrid lines with both source and sink improvements were produced (Approval of Type 1 Use Regulations Concerning Living Modified Organisms under application).
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