| Budget Amount *help |
¥45,500,000 (Direct Cost: ¥35,000,000、Indirect Cost: ¥10,500,000)
Fiscal Year 2017: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2016: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2015: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2014: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2013: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Outline of Final Research Achievements |
Quantitative trait loci (QTLs) for the seedling emergence under low-temperature field conditions, lodging resistance and leaf photosynthesis were combined by the marker-assisted selection. Each trait was improved significantly in the pyramided near-isogenic line (NIL) carrying more than one QTL compared with the NIL carrying a single QTL. By combining QTLs for the seedling emergence and the preharvest sprouting, a NIL with improved seedling emergence was developed without increasing preharvest sprouting. We also found a QTL which enhanced leaf photosynthesis and increased dry matter production and grain yield. From the research, it was suggested that we could improve grain yield of direct seeded rice in flooded paddy field by selecting appropriate QTLs and pyramiding them into it.
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