| Project/Area Number |
23580042
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Kagawa University |
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Principal Investigator |
KATAOKA Ikuo 香川大学, 農学部, 教授 (60135548)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | マタタビ属 / 両性 / 自家結実 / 自生種 / 種間交雑 / キウイフルーツ / 育種 / Actinidia / 倍数性変異 / 中国 / Ａｃｔｉｎｉｄｉａ / 自家結実性 |
|---|
| Research Abstract |
Characteristics of the tetraploid plants of Actinidia collected in a warm Pacific region on Kyushu Island, Japan were investigated. Morphological characteristics of tetraploid plants, such as skin color and lenticel of fruit, were similar to those of A. rufa; however, the number of petals, color and hair of calyx, and shape of fruit were distinguished from A. rufa. All the tetraploid plants bore only morphologically hermaphroditic flowers. Pollens collected from these flowers germinated at a high rate of 40-61%. By self-pollination, the flowers of the tetraploid plant set fruit over 97%. The seeds obtained by self-pollination germinated at a high rate of 81%. By the cross between the tetraploid plant and tetraploid cultivars of A. chinensis, viable seeds were obtained. The seeds germinated at 65-92%. These results showed that the tetraploid Actinidia plants are functionally hermaphroditic and self-fruitful, implying a potential as breeding materials.
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