[1]孟力力,宋江峰,柏宗春,等.远红光对生菜光合作用及叶绿素荧光特性的影响[J].江苏农业学报,2022,38(01):181-189.[doi:doi:10.3969/j.issn.1000-4440.2022.01.022]
　MENG Li-li,SONG Jiang-feng,BAI Zong-chun,et al.Effects of far-red light on photosynthesis and chlorophyll fluorescence characteristics of lettuce[J].,2022,38(01):181-189.[doi:doi:10.3969/j.issn.1000-4440.2022.01.022]
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远红光对生菜光合作用及叶绿素荧光特性的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
38
期数:
2022年01期
页码:
181-189
栏目:
园艺
出版日期:
2022-02-28

文章信息/Info

Title:
Effects of far-red light on photosynthesis and chlorophyll fluorescence characteristics of lettuce
作者:
孟力力1; 2; 宋江峰3; 柏宗春1; 2; 曹凯1; 2; 张义4; 杨其长4
（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产品加工研究所，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）
Author(s):
MENG Li-li1; 2; SONG Jiang-feng3; BAI Zong-chun1; 2; CAO Kai1; 2; ZHANG Yi4; YANG Qi-chang4
(1.Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China；2.Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China；3.Institute of Agro-product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;4.Key Laboratory of Energy Conservation & Waste Management of Agricultural Structures, Ministry of Agriculture and Rural Affairs, Beijing 100089, China)
关键词:
生菜; LED补光; 远红光; 生长; 光合作用; 叶绿素荧光特性
Keywords:
lettuce; LED supplementary lighting; far-red light; growth; photosynthesis; chlorophyll fluorescence characteristics
分类号:
S636.2
DOI:
doi:10.3969/j.issn.1000-4440.2022.01.022
文献标志码:
A
摘要:
以植物工厂中水培生菜为试验对象，白光LED光源处理作为对照，在对照基础上添加不同光照度的远红光设置FR1处理[添加10 μmol/(m2·s)远红光]和FR2处理[添加20 μmol/(m2·s)远红光]，研究不同远红光光照度对生菜生长、光合作用及叶绿素荧光特性的影响。结果表明：与对照相比，FR1处理显著提高了生菜株高、最大叶面积、根系长度及干鲜质量；FR2处理的株高、根系长度与对照间差异不显著，且生菜干鲜质量随着远红光照度的增加呈增长变缓趋势。FR2、FR1处理均显著降低了叶片净光合速率，但同时提高了光饱和点及降低了暗呼吸速率，有利于生菜干物质的累积。远红光处理增加了单位面积活性反应中心数量，增加了吸收与捕获的光能；随着远红光强度的增加，FR2处理的PSⅡ供体侧放氧复合体（OEC）遭受严重破坏，用于电子传递的能量显著降低，即吸收的光能用于光化学反应的比例降低；且FR2处理用于热耗散的能量比例显著大于FR1处理。综上所述，在白光LED上添加10 μmol/(m2·s)远红光可提高生菜产量。
Abstract:
The effects of different far-red light intensities on the growth, photosynthesis and chlorophyll fluorescence characteristics of hydroponic lettuce in plant factories were studied, and white LED light source treatment was used as control. The FR1 treatment and FR2 treatment were set by adding different intensities of far-red light on the basis of control. The results showed that compared with control, the plant height, leaf area, root length, dry and fresh weight of lettuce were significantly increased in FR1 treatment. There was no significant difference in plant height and root length between FR2 treatment and control, and with the increase of far-red light intensity, the dry and fresh weight of lettuce increased slowly. The net photosynthetic rate of leaves was significantly decreased, however, light saturation point was increased and dark absorption rate was decreased in FR2 and FR1 treatments, which was beneficial to the accumulation of dry matter in lettuce. The number of active reaction centers per unit area, and the light energy of absorption and capture were increased under treatments of FR1 and FR2. With the increase of far-red light intensity, the oxygen-evolving complex (OEC) at donor side of PSⅡ in FR2 treatment was severely destroyed, and the energy used for electron transfer was decreased significantly, indicating that the proportion of absorbed light energy used for photochemical reaction was decreased. The heat dissipation rate of FR2 treatment was significantly higher than that of FR1 treatment. Above all, adding 10 μmol/(m2·s) far-red light on the basis of white LED can increase the yield of lettuce.

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备注/Memo

备注/Memo:
收稿日期：2021-06-16基金项目：江苏省农业科技自主创新基金项目[CX(21)2022]；江苏省政策引导类计划(苏北科技专项)项目(SZ-SQ2021009)；江苏省科技项目-现代农业-重点及面上项目(BE2021379)；上合现代农业发展研究院项目(SC021B002)作者简介：孟力力（1982-），女，山西晋中人，硕士，副研究员，主要从事设施农业环境工程研究。（E-mail）menglili90@163.com通讯作者：宋江峰，(E-mail)songjiangfeng102@163.co
更新日期/Last Update: 2022-03-04