| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2020: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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| Outline of Final Research Achievements |
Dominant male sterility is a powerful tool to apply outcross-based breeding system to autogamous crops such as rice. We previously obtained male sterile plants in an indica rice cultivar Lebed backcrossed with a japonica Taichung 65 (T65) and found the heterozygous Lebed allele of the male sterility gene, named LEBED-TAICHUNG 65 MALE STERILITY (LTMS), acts as dominant sporophytic pollen killer. We carried out map-based cloning of the LTMS gene and identified a candidate gene for LTMS. The LTMS gene was demonstrated to be the Lebed allele of the LTMS acting as dominant male sterility allale in a nuclear background of japonica rice, thus would be useful for recurrent selection breeding of japonica rice.
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