| Budget Amount *help |
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2016: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Outline of Final Research Achievements |
To elucidate the molecular mechanism of hybrid vigor in Chinese cabbage (Brassica rapa L. var. pekinensis), we performed genetic, epigenome, and transcriptome analyses. We showed that genetic distance of parental lines was not associated with the level of hybrid vigor. QTLs of leaf area at 14 days after sowing or yield were identified. We characterized the epigenetic states such as DNA methylation or histone modification at the whole genome level in the F1 hybrid and its parental lines. We identified differentially expressed genes between parents and their F1 hybrid by RNA sequencing, and chloroplast-targeted genes tended to be upregulated in F1 hybrid compared to the parental lines at 2 days after sowing.
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