Journal of Nuclear Agricultural Sciences ›› 2022, Vol. 36 ›› Issue (1): 226-235.DOI: 10.11869/j.issn.100-8551.2020.01.0226

• Isotope Tracer Technique·Ecology and Environment·Physiology • Previous Articles     Next Articles

Effects of Different Ratios of Red Light and Far Red Light on Growth, Photosynthetic Characteristics and Quality of Mesembryanthemum crystallinum L.

MENG Lili1,2(), CAO Kai1,2,*(), SUN Qian3,*(), BAI Zongchun1,2, ZHANG Yi4   

  1. 1Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014
    2Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing, Jiangsu 210014
    3Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014
    4Key Laboratory of Energy Conservation & Waste Management of Agricultural Structures, Ministry of Agriculture and Rural Affairs, Beijing 100089
  • Received:2021-03-12 Accepted:2021-06-23 Online:2022-01-10 Published:2021-12-06
  • Contact: CAO Kai, SUN Qian

不同红光远红光配比对冰草生长发育、光合特性及品质的影响

孟力力1,2(), 曹凯1,2,*(), 孙倩3,*(), 柏宗春1,2, 张义4   

  1. 1江苏省农业科学院农业设施与装备研究所,江苏 南京 210014
    2农业农村部长江中下游设施农业工程重点实验室,江苏 南京 210014
    3江苏省农业科学院农业资源与环境研究所,江苏 南京 210014
    4农业农村部设施农业节能与废弃物处理重点实验室,北京 100089
  • 通讯作者: 曹凯,孙倩
  • 作者简介:孟力力,女,副研究员,主要从事设施农业环境工程研究。E-mail: menglili90@163.com
  • 基金资助:
    农业农村部设施农业节能与废弃物处理重点实验室开放课题;江苏省农业科技自主创新资金项目[CX(21)2022]

Abstract:

In order to investigate the effects of red far-red light ration on the yield and quality of hydroponic Mesembryanthemum Crystallinum L. in artificial light plant factories, under the condition of 200 μmol·m-2·s-1 of photosynthetic effective radiation intensity, white LED was used as CK treatment (R/FR=5.5), and FR1 treatment (R/FR=1.2) and FR2 treatment (R/FR=0.8) were set by adding different intensities of far red light on the basis of CK respectively, and the growth and development, photosynthetic characteristics and nutritional quality of plant treated with different light quality combinations were studied. The results showed that compared with CK treatment, the plant heights of FR2 and FR1 treatments were significantly increased by 32.59% and 20.70%, respectively; the leaf area of FR2 and FR1 treatments were significantly increased by 162.68% and 47.33%, respectively; the fresh and dry quality(weight) of the overground part of FR2 treatment were significantly increased by 52.08% and 63.66%, respectively. FR2 and FR1 treatments reduced leaf chlorophyll content, chlorophyll a/b value and net photosynthetic rate, while improved the ability of plant to use weak light. Low R/FR values had different effects on the quality indicators of plant, and the carotenoids of FR2 and FR1 treatments were significantly reduced by 27.08% and 34.62% compared with CK treatment. The contents of soluble sugar, soluble protein and vitamin C in the leaves of FR2 treatment were significantly increased by 23.86%, 27.48% and 17.73%, respectively. FR2 and FR1 treatments significantly increased the volatile content of ketones and esters in plant, and both significantly reduced the nitrite content in plant leaves. Setting the R/FR value of 0.8 on the basis of the white LED in the plant factory can effectively improve the yield, vitamin C, soluble sugar and volatile ketones and esters content of hydroponic Mesembryanthemum Crystallinum L. This study is expected to provide theoretical reference for application of far red light in the plant factory.

Key words: Mesembryanthemum crystallinum L., LED supplementary light, ratio of red and far red light, photosynthetic characteristics, quality

摘要:

为探明人工光植物工厂中红光远红光配比对水培冰草产量和品质的影响,本研究在光合有效辐射强度200 μmol·m-2·s-1的条件下,以白光LED作为CK(R/FR=5.5),在CK基础上添加不同强度远红光,分别设置FR1(R/FR=1.2)和FR2(R/FR=0.8),研究不同光质组合处理下冰草的生长发育、光合特性及营养品质等指标的变化。结果表明,与CK相比,FR2和FR1的株高分别显著增加32.59%和20.70%,叶面积分别显著增加162.68%和47.33%;FR2的地上部鲜、干质量分别显著增加52.08%和63.66%。FR2和FR1降低了叶片叶绿素含量、叶绿素a/b值及净光合速率,但提高了冰草对弱光的利用能力。低R/FR值对冰草各品质指标有不同程度影响,FR2和FR1的叶片类胡萝卜素较CK分别显著下降27.08%和34.62%;FR2的叶片可溶性糖、可溶性蛋白及维生素C含量较CK分别显著增加23.86%、27.48%和17.73%。FR2和FR1显著增加了冰草中酮类及酯类挥发性物质含量,并显著降低了冰草叶片的硝酸盐含量。综上,植物工厂中白光LED基础上添加远红光设置R/FR值为0.8,可有效提高水培冰草的产量、维生素C、可溶性糖和挥发性酮类及酯类物质含量。本研究为远红光在植物工厂中的应用提供了参考。

关键词: 冰草, LED补光, 红光远红光配比, 光合特性, 品质