不同光质夜间补光对番茄幼苗耐冷性的影响

刘福长; 杨玉凯; 林碧英

doi:10.19303/j.issn.1008-0384.2020.11.007

不同光质夜间补光对番茄幼苗耐冷性的影响

doi: 10.19303/j.issn.1008-0384.2020.11.007

刘福长^{1, 2,},
杨玉凯²,
林碧英^2, ,

1.
福建省南靖县土壤肥料站，福建　南靖　363600
2.
福建农林大学园艺学院，福建　福州　325000

基金项目: 福建省科技计划重大专项（2081NZ0002-2）

详细信息

作者简介:
刘福长（1962−），男，农艺师，研究方向：设施园艺（E-mail：490835069@qq.com）

通讯作者:
林碧英（1963−），女，教授，研究方向：蔬菜学与设施园艺（E-mail：lby3675878@163.com）

中图分类号: S 641.2
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- 文章访问数: 958
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- 被引次数: 0
出版历程
- 收稿日期: 2020-01-13
- 修回日期: 2020-03-30
- 网络出版日期: 2020-11-24
- 刊出日期: 2020-11-30

Effect of Nighttime Exposure to Light from Color Lamps on Cold Tolerance of Tomato Seedlings

LIU Fuchang^{1, 2
,},
YANG Yukai²,
LIN Biying^{2
, ,}

1.
Agricultural Technology Extension Station of Nanjing County, Nanjing, Fujian　363600, China
2.
College of Horticulture, Fujian Agricultural and Forestry University, Fuzhou, Fujian　325000, China

摘要

摘要: 目的探讨不同光质夜间补光对番茄幼苗耐冷性的影响，为提高番茄幼苗耐冷性提供理论和实践依据。方法以倍盈番茄为试验材料，采用光质分别为白光（W）、红光（R）、蓝光（B）和红蓝组合光配比（2R/8B、5R/5B、8R/2B）等6个组合进行夜间补光处理，20 d后各处理番茄幼苗置于亚低温（10 ℃/5 ℃）下胁迫，以未补光所培育番茄幼苗为对照。结果与对照相比，各补光处理所培育的番茄幼苗在亚低温处理期间叶片中的电解质渗透率和丙二醛（MDA）含量上升幅度均显著低于对照，红蓝复合光（2R/8B、5R/5B、8R/2B）在亚低温胁迫期间叶片一直保持着较高的超氧化物歧化酶（SOD）、过氧化氢酶（CAT）、过氧化物酶（POD）活性，在亚低温胁迫6 d 时以红蓝复合8R/2B活性上升幅度最高，分别达到399.49%、129.01%和135.74%，显著高于对照。结论夜间补光处理均可提高番茄幼苗的耐冷性，其中以红蓝复合8R/2B补光处理的幼苗的抗低温胁迫能力最强。
- 番茄 /
- 苗期 /
- 补光 /
- 光质 /
- 低温胁迫 /
- 耐冷性 /
- 逆境生理指标
Abstract: Objective Effect of exposure to light of varied spectra at night on the cold tolerance of tomato (Lycopersicon esculentum) seedlings was investigated. Method Tomato seedlings grown under supplemental lighting at night by using white (W), red (R) or blue (B) light or combined 2R/8B, 5R/5B or 8R/2B were taken as treatments, and seedlings grown under natural conditions were taken as control. After 20d of cultivation, the plants were subjected to a low-temperature stress of 10/5 ℃ (day/night temperatures) to determine the tolerance of the seedlings toward mild hypothermia. Result The ranges of increased electrolyte permeability and MDA content in the leaves of the treatment seedlings under low-temp stress were significantly lower than those of control. After being exposed at night to the combination of 2R/8B, 5R/5B or 8R/2B, the seedlings could maintain high activities of SOD, CAT, and POD under the low-temp stress. These activities peaked when the 8R/2B was applied to reach significantly 399.49% on SOD, 129.01% on CAT, and 135.74% on POD higher than those of CK, 6d after the seedlings were moved to the low-temp environment. Conclusion Exposing tomato seedlings to light of different spectra at night improved the ability of the plants to tolerate mild hypothermia. The effect was maximized when the seedlings were grown for 20d under the nighttime lighting with 8 red and 2 blue lamps.
- Tomato /
- Seedling stage /
- Supplement light /
- light quality /
- low-temperature stress /
- cold tolerance /
- Physiological indicators of adversity

HTML全文

图 1 亚低温胁迫对不同光质夜间补光所育番茄幼苗电解质渗透率的影响

注：不同小写字母表示在0.05水平下差异显著。下同

Figure 1. Effect of mild hypothermia on electrolyte permeability of tomato seedlings under nighttime exposure to light of various spectra

Note：Data with different lowercase letters indicate significant difference at 0.05 level. Same for the following.

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图 2 亚低温胁迫对不同光质夜间补光所育番茄幼苗丙二醛含量的影响

Figure 2. Effect of mild hypothermia on MDA activity of tomato seedlings under nighttime exposure to light of various spectra

下载: 全尺寸图片幻灯片

图 3 亚低温胁迫对不同光质夜间补光所育番茄幼苗SOD活性的影响

Figure 3. Effect of mild hypothermia on SOD activity of tomato seedlings under nighttime exposure to light of various spectra

下载: 全尺寸图片幻灯片

图 4 亚低温胁迫对不同光质夜间补光所育番茄幼苗POD活性的影响

Figure 4. Effect of mild hypothermia on POD activity of tomato seedlings under nighttime exposure to light of various spectra

下载: 全尺寸图片幻灯片

图 5 亚低温胁迫对不同光质夜间补光所育番茄幼苗CAT活性的影响

Figure 5. Effect of mild hypothermia on CAT activity of tomato seedlings under nighttime exposure to light of various spectra

下载: 全尺寸图片幻灯片

表 1 试验设计光质处理

Table 1. Experimental design of nighttime light exposures of tomato seedlings

处理 Treatments	白光 White light intensity/ µmol·m⁻²·s⁻¹	红光 Red light intensity/ µmol·m⁻²·s⁻¹	蓝光 Blue light intensity/ µmol·m⁻²·s⁻¹
对照（CK）	0	0	0
W	100	0	0
R	0	100	0
B	0	0	100
2R/8B	0	20	80
5R/5B	0	50	50
8R/2B	0	80	20

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