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中国农学通报 ›› 2019, Vol. 35 ›› Issue (14): 77-81.doi: 10.11924/j.issn.1000-6850.casb18040090

• 林学 园艺 园林 • 上一篇    下一篇

不同光强LED蓝光对滇重楼生长、光合特性及皂苷累积的影响

曹嘉芮1, 何忠俊1, 张勤涛1, 梁社往1, 莫健雷2   

  1. 1.云南农业大学资源与环境学院;2.马关县土壤肥料工作站
  • 收稿日期:2018-04-18 修回日期:2018-06-27 接受日期:2018-07-24 出版日期:2019-05-15 发布日期:2019-05-15
  • 通讯作者: 何忠俊
  • 基金资助:
    国家自然科学基金“LED光调控对滇重楼皂苷组分含量和同位素分馏的影响机理”(81260613);国家自然科学基金“滇重楼有效成分和同 位素指纹图谱与生态因子的关系研究”(30873374)。

Intensity of LED Blue Light Affects the Growth, Photosynthetic Characteristics and Saponin Accumulation of Paris polyphylla var. yunnannensis

  • Received:2018-04-18 Revised:2018-06-27 Accepted:2018-07-24 Online:2019-05-15 Published:2019-05-15

摘要: 旨在为滇重楼的栽培和LED光源的应用提供理论依据。实验光源波长为460 nm的单质蓝光,将3 年生滇重楼分别放于光照强度为50、100、150、200 μmol/(m2 · s)的光照下进行栽培,观测其生长状况。结果表明,滇重楼株高、地上生物学产量、净光合速率和地下生物学产量均以光强150 μmol/(m2 · s)处理最高,气孔导度、蒸腾速率在100 μmol/(m2 · s)处理时最高,200 μmol/(m2 · s)处理最低。不同光强蓝光对滇重楼叶片光能转换效率及反应活性影响不显著。滇重楼根茎皂苷组分含量和总皂苷含量随蓝光光强的增加呈先增后降的趋势,在光强100 μmol/ (m2 · s) 处理下最高,200 μmol/(m2 · s)处理下最低。综合分析滇重楼生长状况、光合荧光特性和根茎皂苷含量,蓝光光强150 μmol/(m2 ·s)最有利于促进滇重楼叶片生长和光合作用,100 μmol/(m2 · s)最有利于滇重楼根茎皂苷累积。建议在滇重楼设施栽培上将蓝光光强控制在100~150 μmol/(m2 ·s)。

关键词: 土地资源, 土地资源, 生态安全, 驱动因素, 评价框架, 评价方法

Abstract: It aims to provide a basis for cultivation of Paris polyphylla var. yunnanensis and application of LED light source. Experimental light source was the elemental blue LED light with wavelength of 460 nm, 3-yearold seedlings of P. polyphylla var. yunnannens were cultivated under the light intensity treatment of 50, 100, 150, 200 μmol/(m2 ·s) respectively to observe their growth status. The results showed that the plant height, ground biological yield, leaf net photosynthetic rate, and underground biological yield of P. polyphylla var. yunnanensis were the highest at 150 μmol/(m2 ·s) treatment, the stomatal conductance and transpiration rate were the highest under the treatment of 100 μmol/(m2 ·s) and the lowest at 200 μmol/(m2 ·s) treatment. The effects of different light intensities on light energy conversion efficiency and reaction activity of P. polyphylla var. yunnanensis were not significant. The contents of different saponin components and total saponin in rhizome increased and then decreased with the increase of blue light intensity. The saponin content was the highest at 100 μmol/(m2·s) treatment and the lowest at 200 μmol/(m2·s) treatment. Comprehensive analysis of the plant growth condition, leaf photosynthetic characteristics and saponin content indicates that the blue light intensity of 150 μmol/ (m2·s) is the most favorable topromote the leaf growth and photo synthesisand 100 μmol/(m2·s) is the most favorable light intensity for the accumulation of rhizome saponin in P. polyphylla var. yunnanensis. It is suggested that the blue light intensity should be controlled at 100- 150 μmol/(m2 · s) in the facility cultivation of P. polyphylla var. yunnannensis.