| Project/Area Number |
12794002
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| Research Category |
Grant-in-Aid for University and Society Collaboration
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| Allocation Type | Single-year Grants |
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| Research Field |
園芸・造園学
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| Research Institution | Tottori University |
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Principal Investigator |
TANABE Kenji Faculty of Agriculture, Piofessor, 農学部, 教授 (40032106)
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| Co-Investigator(Kenkyū-buntansha) |
OTANI Hiroshi Faculty of Agriculture, Professor, 農学部, 教授 (50032305)
ITAI Akihiro Faculty of Agriculture, Associate Professor, 農学部, 助教授 (10252876)
TAMURA Fumio Faculty of Agriculture, Professor, 農学部, 教授 (50217197)
TABIRA Hiroki Tottori Horticultural Research Center, Researcher, 生物工学研究室, 室長(研究職)
KODAMA Motoichiro Faculty of Agriculture, Assistant professor, 農学部, 講師 (00183343)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Storage ability / Self-compatibilty / Black spot resistance / Pear scab resistance / Gene diagnosis / Ethylene |
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| Research Abstract |
Tottori University researchers succeeded to release two self-compatible cultivars, 'Akibae' and 'Zuishu', which were resistant to black spot disease and had high quality. Moreover they released an early maturing cultivar 'Shinju', which were also resistant to black spot disease and had high quality. These cultivars already have been registered, and are open to public. Especially the cultivar, 'Akibae' deserved high reputation and its cultivated area increases to 40ha in 2003. They crossed these cultivars with 'Kinchaku', which is resistant to pear scab to produce new cultivars with resistance to pear scab. Shelf life of Japanese pear fruit is correlated with maximum ethylene production. They succeeded to develop the gene diagnosis for storage ability in Japanese pear cultivars and strains by analysis of genes for ethylene biosynthetic pathway. This diagnosis makes it possible to release new cultivars with high shelf life. With regard to mechanisms of black spot disease, two candidate receptor proteins for AK toxin from Alternaria alternata were identified. A trial for the gene cloning of the AK receptor protein is in progress. Researchers of Tottori Horticultural Research Center developed the gene diagnosis for self-compatibility. This also makes it easy to find new cultivars without artificial pollination.
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