Effects of Cooling Temperature and Duration on Flowering of the Nobile
Effects of Cooling Temperature and Duration on Flowering of the Nobile
复制标题
冷却温度和时间对金钗开花的影响
DOI：
10.21273/hortsci.43.6.1765
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Yin
中科院分区：
文献类型：
--
作者：
C. Yen;T. Starman;Yin
在两个不同的地点（College Station和Weslaco， TX）冷却温度[恒定（10、13、15或18°C，或15、18或21°C）]和持续时间（2,3,4,5或6周，或3,4,5,6或7周）对石斛“雪王”海玛丽的生长和开花的影响。对杂交品种进行了研究，并对开花所需的冷却量进行了量化。温度和冷却时间之间的相互作用在从冷却开始或完成到开花所需的时间、每个开花节点的平均花数和流产芽的节点百分比上都是显著的。将冷却时间从2周增加到6周或3周增加到7周，导致冷却完成后到达花期的时间缩短。然而，冷却时间的延长延长了开花作物所需的时间。植物在10、13和15°C的相对较高的温度下冷却，在冷却完成后所需的时间更短。在10、13和15°C的低温条件下，植株的开花节点和总花比在18°C的低温条件下要多，在15或18°C的低温条件下比在21°C的低温条件下要多。结果表明，在13°C下放置3周已达到冷却要求，建议在13或15°C下放置3周，既节省生产成本，又不影响花的发育。
The effects of cooling temperature [constant (10, 13, 15, or 18 °C, or 15, 18, or 21 °C)] and duration (2, 3, 4, 5, or 6 weeks, or 3, 4, 5, 6, or 7 weeks) at two separate locations (College Station and Weslaco, TX) on growth and flowering of Dendrobium Sea Mary 'Snow King', a Dendrobium nobile Lindl. hybrid, were investigated and the cooling requirement for flowering was quantified. Interactions between temperature and cooling duration were significant on time required to reach anthesis from either the beginning or completion of cooling, average flower number per flowering node, and percentage of nodes with aborted buds. Increasing cooling duration from 2 to 6 or 3 to 7 weeks resulted in less time to reach anthesis after the completion of cooling. However, the increased cooling durations extended the time needed for producing a flowering crop. Plants cooled at a relatively higher temperature among 10, 13, and 15 °C required less time to reach anthesis after the completion of cooling. Plants had more flowering nodes and total flowers when cooled at 10, 13, or 15 °C than at 18 °C in College Station or at 15 or 18 °C than at 21 °C in Weslaco. The results suggest that 3 weeks at 13 °C has saturated the cooling requirement, and 3 weeks at 13 or 15 °C is a recommended cooling treatment that saves production cost without retarding flower development.