彩叶草的开花反应与光周期及叶片运动的昼夜节律的关系。
The flowering response of coleus in relation to photoperiod and the circadian rhythm of leaf movement.
作者信息
Halaban R
机构信息
Department of Biology, Princeton University, Princeton, New Jersey 08540.
出版信息
Plant Physiol. 1968 Dec;43(12):1894-8. doi: 10.1104/pp.43.12.1894.
Abstract
The flowering response of Coleus frederici and Coleus blumei x C. frederici is dependent on the photoperiod; both plants have a critical day length of about 12 hr. The inductive phase, defined as the period when light signals inhibit floral development, started 10 hr after the onset of darkness under 4 and 8-hr photoperiods, and 8 hr after the onset of darkness under a 12-hr photoperiod. However, a fixed temporal relationship between the inductive phase and the minimum leaf position was observed for Coleus frederici. The inductive phase always started 5 hr after the minimum leaf position. This evidence supports the theory that a circadian clock participates in the time measurement process of photoperiodic floral induction.
摘要
弗雷德里克彩叶草以及彩叶草（锦紫苏）与弗雷德里克彩叶草的杂交种的开花反应取决于光周期；这两种植物的临界日长约为12小时。诱导期被定义为光信号抑制花芽发育的时期，在4小时和8小时光周期下，诱导期在黑暗开始后10小时开始，在12小时光周期下，诱导期在黑暗开始后8小时开始。然而，对于弗雷德里克彩叶草，观察到诱导期与最低叶位之间存在固定的时间关系。诱导期总是在最低叶位出现5小时后开始。这一证据支持了生物钟参与光周期诱导开花时间测量过程的理论。
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本文引用的文献
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The Circadian Rhythm of Leaf Movement of Coleus blumei x C. frederici, a Short Day Plant. I. Under Constant Light Conditions.彩叶草叶运动的昼夜节律，短日植物。一、在持续光照条件下。
Plant Physiol. 1968 Dec;43(12):1883-6. doi: 10.1104/pp.43.12.1883.
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