| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
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| Outline of Final Research Achievements |
The melon is a juicy and popular fruit. Melons are climacteric fruits and their ripening is controlled by ethylene. This causes rapid ripening and poor shelf-life. This study was conducted to identify mutations in Honeydew and B2, melon varieties with good shelf-life. Segregated populations were created and genetic and GWAS analyses were conducted. Multiple loci were suggested to be involved for the defect in flesh softening trait in B2, but the loci could not be identified. For the defective ethylene synthesis trait in Honeydew, a single locus was predicted to be responsible, and GWAS analysis suggested the presence of the responsible gene on chromosome 8. There are no genes suggested to be involved in ethylene synthesis in this region, which may lead to the discovery of novel genes.
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