摘要： 通过在日光温室内进行的不同弱光照强度和弱光持续时间处理, 研究了弱光对番茄茎叶中Cu含量的影响。结果表明, 在50%自然光强的弱光条件下处理3周时, 会导致番茄茎叶中Cu含量的下降, 且随光照强度的降低与持续时间的延长而加重。弱光处理主要使植株上部新叶片中Cu含量降低, 而对下部老叶中Cu含量影响较小。耐弱光番茄品系在弱光环境下对Cu的吸收和积累受到影响的较小。

关键词: 弱光, 番茄, Cu, 微量元素

Abstract: The copper content in stem and leaf of tomato, which cultivated under different low light intensity and low light continuously time condition in spring sunlight greenhouse, were studied in this experiment. The result showed that copper content decrease in stem and leaf of tomato longer than 3 weeks under 50% natural light intensity. The lower light intensity and the longer low light continuously time were, the decrease of copper content was heavier. The low light led to copper content greatly decreased in top leaves of tomato plant, while the influence to bottom leaves was less. The effects of low light to absorption and accumulation of copper in low light resistant line were less.

Key words: Low light, Tomato, Copper, Microelement

中图分类号: 

• S641.2