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EXPANSION OF TEMPERATURE RANGE FOR FLOWER BUD INITIATION AND PREVENTION OF REST IN HYDRANGEA

扩大绣球花蕾萌发温度范围并防止花蕾休眠

基本信息

批准号：
05660032
负责人：
INABA Kunio
金额：
$ 1.34万
依托单位：
SHIMANE UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05660032/
关键词：
Hydorangea Control Of Flowering 休眠休眠回避冷蔵花芽分化

项目摘要

Hydrangea (Hydrangea macrophylla f.hortensia) flowers in summer in Japan after flower bud initiation and rest of the previous year. We tried to make programs for autumn or winter shipping of hydrangea by controlling its flower bud initiation and rest.1. For some flowers which fall in rest in autumn, it has been suggested high temperature in summer induces their rest. There are flowers like liatris in which rest is clearly induced with summer environments. Although we storaged hydrangeas at 3 to 5ﾟC in summer for avoiding the rest, they fell into rest only showing the delay of its start. And in another experiment it was showed that the rest of hydrangea was induced directly by relatively cool temperature and short daylength which occur in autumn.2. Morita et.al. (1978) reported that hydragea initiated flower bud in spring when they grew from winter in the green house, and they flowered in autumn after some cool storage. However the program had not been used in hydrangea production because their flower bud initiation in spring were not always successful.We tried to grow the shoots of hydrangea large enough capable of initiating flower bud and then treated growth retardant, Pacrobutorazol. In result we recognized that all of plants initiated flower buds. But, we encountered with severe problems in which the flower buds did not develop. Although flower buds developed after cool storage, they did not flower uniformly and bore poor inflorescence.Thus further study is needed to find proper methods of controlling flowering and rest for autumn or winter shipping of hydrangea.

绣球花（Hydrangea macrophylla f.hortensia）在日本的夏季开花，在前一年的花蕾开始和休息之后。我们尝试通过控制绣球花的花蕾萌发和休眠来制定秋冬运输方案。1.对于一些在秋天休息的花来说，有人认为夏季的高温会导致它们的休息。有花喜欢liatris其中休息显然是诱导与夏季环境。虽然我们在夏季将绣球花储存在3至5摄氏度以避免休息，但它们进入休息只是显示其开始的延迟。另一项试验表明，八仙花的休眠是由秋季出现的相对凉爽的温度和短日照直接诱导的. Morita et.al.（1978）报道，水螅在绿色温室中越冬后，春季萌发成花，经冷藏后，秋季开花。但由于绣球花在春季的花芽分化并不总是成功的，因此该方案一直没有在绣球花生产中应用。结果表明，所有植物都有花芽发生。但是，我们遇到了严重的问题，其中花蕾没有发展。冷藏后虽然花蕾发育，但开花不均匀，花序发育不良，因此需要进一步研究，找到适合秋冬运输的控制开花和休眠的方法。