权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on the Forcing of Tree Raeony

林木胁迫研究

基本信息

批准号：
01560034
负责人：
AOKI Noriaki
金额：
$ 1.41万
依托单位：
SHIMANE UNIV.
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

项目摘要

1. The first study was undertaken to clarify the effects of prechilling, initial growth temperature after planting, and cultivation temperature on the growth and cut-flower quality of forced tree paeony. The sprouting and flowering were accelerated by prechilling. When initial growth temperature was kept low, the flowering percentage was satisfactorily high, regardless of prechilling treatment. The flowering percentage for prechilling paeony was remarkably lowered by cultivation under high temperature at initial growth stage. When the average of cultivation temperature after sprouting was kept about 17 in the middle forcing, the number of days from sprouting to flowering to flowering was 30 days or less. When the average temperature was lowered by ca. 4 , the flowering was delayed by 15 days, and the cut-flower quality was greatly improved. These results indicate that we can cultivate the cut flower 4 times a year with early forcing to semi-forcing in a greenhouse.2. The second study w … More as undertaken to clarify the effects of prechilling on the growth and development of flower bud and cut-flower quality of forced tree paeony. The growth and development of flower bud was accelerated and petal number was increased by prechilling. Stamens and pistils were going to form in some sample plants of some cultivars at the end of prechilling. Undifferentiation parts were recognized in organs between petals and stamens. This indicates that there is a period when the differentiation of petals and stamens proceeds at the same time. No problem was found in the plant form of cut flowers for all cultivars, of which flowering percentage exceeded the commercially successful flowering linit (80% or above), and leaf extension and stalk length were good, even for plants grown without prechilling.3. The third study was undertaken to clarify the effect of prechilling temperature on the growth and development of flower bud and cut-flower quality of forced tree paeony. The growth and development of flower bud were accelerated by prechilling at 12 or 15. The unmber of petals at anthesis tended to be decreased by prechilling treatment, especially remarkable in some cultivars. It was found that tree paeony cultivars for December shipping are divided into 3 groups on the basis on the effect of prechilling on flowering percentage : (1) a group improved, (2) a group lowered, and (3) a group with no or small change. It indicates that suitable temperatures during prechilling period are different in one cultivar from another. The relationship between the early or late differentiation of flower bud and forcing ability was not clear. Less

1.首次研究了预冷、定植后生长初始温度和栽培温度对强制牡丹生长和切花品质的影响。预冷可加速发芽和开花。当初始生长温度保持较低时，无论预冷处理如何，开花率都令人满意地高。预冷牡丹在生育初期因高温栽培，其开花率显着降低。当催芽后平均培养温度保持在17℃左右时，从发芽到开花的天数为30天或更短。当平均温度降低大约时。 4、花期推迟15天，切花品质大幅提高。这些结果表明，在温室中采用早催熟至半催熟的方法，一年可栽培切花4次。 2．第二项研究旨在阐明预冷对强制牡丹花芽生长发育和切花品质的影响。预冷可加速花芽生长发育，增加花瓣数量。一些品种的一些样品植物在预冷结束时将形成雄蕊和雌蕊。在花瓣和雄蕊之间的器官中发现了未分化部分。这表明存在花瓣和雄蕊分化同时进行的时期。所有品种的切花株型均未发现问题，开花率超过了商业上成功的开花极限（80%以上），即使是未经预冷生长的植物，叶伸长和花梗长度也良好。 3．第三项研究是为了明确预冷温度对强制牡丹花芽生长发育和切花品质的影响。 12℃或15℃预冷可加速花芽的生长发育。预冷处理有减少花期花瓣数的趋势，在某些品种上表现尤为明显。研究发现，根据预冷对开花率的影响，将12月出货的牡丹品种分为3组：（1）提高组，（2）降低组，（3）无变化或变化很小的组。这表明不同品种预冷期的适宜温度不同。花芽分化早、晚与催芽能力的关系尚不明确。较少的