照明工程学报

2016, v.27(02) 103-106

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弱光条件下光质与连续光照对水培生菜生长与品质的影响
Influence of Light Quality and Continuous Lighting on Growth and Nutritional Quality of Two Two-color Lettuce Cultivars

余意;杨其长;刘文科;
YU Yi;YANG QiChang;LIU Wenke;Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Key Lab of Energy Conservation and Waste Management of Agricultural Structures,Ministry of Agriculture;

摘要(Abstract):

在密闭植物生长室中,采用LED光源研究了弱光条件下光质与连续光照对水培紫叶生菜和绿叶生菜产量和品质的影响。结果表明,绿叶生菜和紫叶生菜地上部鲜重及根系鲜重都在连续光照处理下显著提高。光周期条件相同时,紫叶生菜在红蓝光比例2∶1光质下地上部鲜重要显著大于红蓝光比例1∶2,绿叶生菜则无显著差异。连续光照处理对紫叶生菜和绿叶生菜总酚和类黄酮含量的影响因光质而异。光照时长相同时,紫叶生菜和绿叶生菜总酚和类黄酮相对含量都有随红光比例增加而显著降低的现象出现。紫叶生菜抗坏血酸含量都随光照时长增加而显著降低。紫叶生菜可溶性糖含量和可溶性蛋白含量受红蓝光比例和光照时长变化影响不显著。光照时长对绿叶生菜可溶性糖含量的影响因光质变化而异。光质相同条件下,绿叶生菜可溶性蛋白含量在连续光照处理下显著降低,且绿叶生菜可溶性糖和可溶性蛋白含量对光质变化的响应因光照时长差异而不同。
Purple lettuce and green lettuce were hydroponically cultivated in a culture room to investigate the influence of light quality and continuous lighting on their growth and nutritional quality. The results showed that the shoot fresh weight and root fresh weight of the two kinds of lettuce improved under treatment of continuous lighting. The shoot fresh weight of purple lettuce under RB 2∶ 1 treatment was significantly higher than that of RB 1∶ 2 when the photoperiod was the same,but that of green lettuce didn't showed significant difference. Phenol and flavonoid relative contents of purple lettuce and green lettuce responded to continuous lighting treatment differently with the variation of light quality. When under the same lighting period,phenol and flavonoid relative contents of purple lettuce and green lettuce reduced with the increasing of red light ratio. The ascorbic acid content of purple lettuce lessened greatly under continuous lighting. The soluble sugar and soluble protein contents of purple lettuce didn't change much with the variation of red and blue light ratio and lighting period. The influence of continuous lighting on soluble sugar content of green lettuce differed with the change of light quality. When under the same light quality,soluble protein contents of green lettuce dropped under treatment of continuous lighting. And soluble sugar and soluble protein contents of green lettuce responded differently to the change of light quality with the alteration of lighting period.

关键词(KeyWords): 光周期;生菜;LED;品质;叶色
Photoperiod;lettuce;LED;quality;leaf color

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(863计划)课题(2013AA103001);; 新疆维吾尔自治区科技计划项目(201332103)资助

作者(Authors): 余意;杨其长;刘文科;
YU Yi;YANG QiChang;LIU Wenke;Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Key Lab of Energy Conservation and Waste Management of Agricultural Structures,Ministry of Agriculture;

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