Studies on bulb formation and changes in endogenous plant hormones in bulbous plants

球根植物球茎形成及内源植物激素变化的研究

• 批准号: 60480042
• 负责人: UEMOTO Shunpei
• 金额: $ 3.9万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60480042/
• 关键词: Bulbous plants; Hyacinth; Easter lily; Hippeastrum; Tulip; Endogenous plant hormones; Dormancy

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.

通过对风信子和百合鳞片状叶片的萌发和激素变化的研究，证实了低温诱导了鳞茎植物的休眠，并阐明了休眠诱导与鳞茎形成诱导的相似性。朱顶红双鳞、常规繁殖和单鳞鳞茎形成过程的显微观察结果表明，它们的形成过程是不同的。黑暗和抗坏血酸处理抑制了完整郁金香最后一个节间的伸长。更多的扩散Auzin从最后一个节间的光-比黑暗-或敌草啶醇处理的植物。<GA_3>施用恢复了烟嘧酚介导的伸长和可扩散生长素含量的降低。去头降低了最后一个节间的伸长。IAA恢复了伸长率的下降，但<GA_3>单独没有。IAA+暗处理和吲哚乙酸+暗处理对最后一节伸长的影响小于IAA+<GA_3>。这表明，最后一个节间的伸长是由生长素和赤霉素，如先前所示的第一个节间。

项目成果

Okubo,H.;S.Shiraishi;S.Uemoto: Journal of the Japanese Society for Horticultural Science. 55. 320-325 (1986)

Okubo,H.；S.Shiraishi；S.Uemoto：日本园艺学会杂志。

Okubo,H.;S.Uemoto: Journal of the Japanese Society for Horticultural Science. 55. 215-220 (1986)

Okubo,H.；S.Uemoto：日本园艺学会杂志。

OKUBO, H. and UEMOTO, S.: "Changes in endogenous gibberellins during internode elongation of tulip Flower stalk as affected by light conditions" Journal of the Japanese Society for Horticultural Science. 55. 215-220 (1986)

OKUBO, H. 和 UEMOTO, S.：“受光照条件影响郁金香花茎节间伸长过程中内源赤霉素的变化”日本园艺学会杂志。

OKUBO, H., SHIRAISHI, S. and UEMOTO, S.: "Factors controlling elongation of the last internode in tulip flower stalk" Journal of the Japanese Society for Horticultural Science. 55. 320-325 (1986)

OKUBO, H.、SHIRAISHI, S. 和 UEMOTO, S.：“控制郁金香花茎最后节间伸长的因素”日本园艺学会杂志。