| Project/Area Number |
60480042
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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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 | Kyushu University |
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Principal Investigator |
UEMOTO Shunpei Kyushu University, Professor, 農学部, 教授 (50038155)
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| Co-Investigator(Kenkyū-buntansha) |
OKUBO Hiroshi Kyushu University, 農学部, 助手 (80150506)
FUJIEDA Kunimitsu Kyushu University, 農学部, 教授 (20038318)
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| Project Period (FY) |
1985 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥6,100,000 (Direct Cost: ¥6,100,000)
Fiscal Year 1986: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1985: ¥5,300,000 (Direct Cost: ¥5,300,000)
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| Keywords | Bulbous plants / Hyacinth / Easter lily / Hippeastrum / Tulip / Endogenous plant hormones / Dormancy |
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| Research Abstract |
Leaf emergence in scaling and changes in plant hormones in hyacinth and easter lily proved that the dormancy in bulbous plants is induced by low temperature, and the similarity of the induction of dormancy and the induction of bulb formation was clarified. The procedures of bulblet formation in twin-scaling, common method for propagation, and single-scaling in Hippeastrum were shown to be different by microscopic observations. And it was proved that the propagation by in vitro single-scaling in Hippeastrum has a possibility.
Elongation of the last internode of intact tulips was inhibited by dark or ancymidol treatment. More diffusible auzin was obtained from the last internode of light- than dark- or ancymidol-treated plants. <GA_3> application recovered the ancymidol-mediated reduction in elongation and content of diffusible auxin. Decapitation reduced elongation of the last internode. IAA recovered the reduction in elongation, but <GA_3> alone did not. The effect of IAA with ancymidol or with dark treatment on elongation of the last internode was less than that of IAA+ <GA_3> . It is suggested that elongation of the last internode is controlled by auxin and gibberellin, as was previously shown with the first internode.
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