| Project/Area Number |
24688004
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Osaka Institute of Technology |
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Principal Investigator |
KAWAMURA Koji 大阪工業大学, 工学部, 講師 (00595613)
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUMOTO Shogo 名古屋大学, 大学院生命農学研究科, 教授 (90241489)
UEDA Yoshihiro 岐阜国際園芸アカデミー
IWATA Hikaru NPOバラ文化研究所
FOUCHER Fabrice フランス国立農業研究所(INRA), 主任研究員
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥21,320,000 (Direct Cost: ¥16,400,000、Indirect Cost: ¥4,920,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
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| Keywords | 四季咲き性 / 遺伝子資源 / レトロトランスポゾン / TERMINAL FLOWER 1 / バラ属 / 自家不和合性 / 栽培化 / 遺伝的多様性 / トランスポゾン / S遺伝子 / 開花調節遺伝子 / 育種 / 倍数性 / フローサイトメーター |
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| Outline of Final Research Achievements |
Modern cultivated roses flower continuously during all favorable seasons (i.e., continuous-flowering). In contrast, most wild species flower once per year (i.e., once-flowering). The continuous-flowering character resulted from a genetic mutation in KSN gene, a floral repressor. Genotyping of KSN gene for a wide range of modern cultivars shows the presence of the mutated allele in their genome, demonstrating that their continuous-flowering behavior has a single genetic origin. In contrast, a few wild species and old cultivars with continuous-flowering behaviors do not have any obvious mutations in KSN gene, indicating that they have a novel genetic origin of continuous-flowering behavior. These roses can be good breeding materials for a new continuous-flowering rose.
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