发光二极管光源对绿萝生长及光合特性的影响  

Epipremnum aureum:growth and photosynthetic response to light-emitting diodes(LED)

作　　者：吴家森[1] 付顺华[1] 郑军[2] 周国泉[2] 

机构地区：[1]浙江林学院林业与生物技术学院,浙江临安311300 [2]浙江林学院理学院,浙江临安311300

出　　处：《浙江林学院学报》2008年第6期739-742,共4页Journal of Zhejiang Forestry College

基　　金："十一五"浙江省科学技术计划项目(2007C22064)

摘　　要：为了解发光二极管(LED)对植物生长及光合特性的影响,选择绿萝Epipremnum aureum作为材料,栽种于2种LED和日光灯中45d后测定其生长指标及光合特性。结果表明:LED或日光灯条件下栽培绿萝在苗高、叶片数和叶片宽等指标上无差异,LED使绿萝叶间距缩短,叶长增长,但不同光质LED(红/蓝)之间无显著差异;绿萝光合速率、胞间二氧化碳摩尔分数、蒸腾速率和气孔导度表现为LED处理大于日光灯,LED处理中又以红蓝光(R/B)为4.3∶1.0大于2.8∶1.0。Light-Emitting Diode （LED） is turning into an important research field as a promising irradiation source for plant factory. To determine the influence of LED on growth and photosynthesis of Epipremnum aureum, a fluorescent lamp and two LEDs, the combination of red and blue LED （R/B） = 2.8 and R/B = 4.3, were used with seedling height, leaf number, leaf width, leaf spacing, leaf length, light quality, net photosynthetic rate, intercellular CO2 concentration, transpiration rate, and stomatal conductance being measured after 45 d of growth with three replications. Results of a t test for the a fluorescent lamp and two LEDs showed no significant difference （P〉0.05） for seedling height, leaf number, and leaf width, but significant difference （P〈0.05） for leaf spacing and leaf length, leaf spacing for LEDs decreased, whereas corresponding leaf length increased. With the two LEDs, light quality differences were slight. Also, signifi- cant difference （P〈0.05） for net photosynthetic rate, intercellular CO2 concentration, transpiration rate, and stomatal conductance, these indexs with LEDs were higher than for a fluorescent lamp. Thus, for the two LED sources, the LED with R/B = 4.3 was more suitable for growth of E. aureum. [ Ch, 4 fig. 2 tab. 13 ref. ]

关 键 词：植物学 发光二极管光源 植物生长 光合特性 绿萝 

分 类 号：S687[农业科学—观赏园艺]