| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2019: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Outline of Final Research Achievements |
We constructed a high-density genetic linkage map with GRAS-Di DNA markers using self-crossed interspecific F2 population between Pyrus communis and P. pyrifolia. The map converged into 17LGs corresponding to the pear chromosome number. The genetic locus for brown spot disease susceptibility was mapped to LG11. However, we could not identify the gene responsible for the trait. We conducted QTL analysis for the trait of non-ripening on the tree derive from European pear, but could not detect the QTL due to a small number of bearing seedlings. We also investigated the fruit lignin content of pear and relative species.
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