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在诱导红瑞木茎抗寒过程中,低温、水分胁迫和短日照的相互作用。

Interactions of low temperature, water stress, and short days in the induction of stem frost hardiness in red osier dogwood.

机构信息

Laboratory of Plant Hardiness, Department of Horticultural Science and Landscape Architecture, University of Minnesota, Saint Paul, Minnesota 55108.

出版信息

Plant Physiol. 1978 Nov;62(5):833-5. doi: 10.1104/pp.62.5.833.

Abstract

The induction of stem frost hardiness by low temperature, water stress, short days, and their combinations in 2- and 4-month-old growing dogwoods (Cornus stolonifera) were investigated. When plants were subjected to more than one factor, the increased hardiness was the sum of the effects of the individual factors involved. No interactions among these factors on hardiness were observed during a 3-week treatment. Results indicate that low temperature, water stress, and short days initially trigger independent frost-hardening mechanisms. Plant ages significantly influenced the change in low temperature-induced frost hardiness, but not the water stress or short day-induced frost hardiness.

摘要

本研究调查了低温、水分胁迫、短日照及其组合对 2 个月和 4 个月大的丛生狗木(Cornus stolonifera)茎抗寒能力的诱导作用。当植物受到多种因素影响时,其抗寒能力的增强是各相关因素作用的总和。在 3 周的处理过程中,没有观察到这些因素之间存在交互作用对其抗寒性的影响。结果表明,低温、水分胁迫和短日照最初会引发独立的抗寒机制。植物年龄对低温诱导的抗寒能力变化有显著影响,但对水分胁迫或短日照诱导的抗寒能力没有影响。

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