Effects of LED light intensity on purple leaf lettuce seedlings
Abstract
To explore the light intensity suitable for the growth of purple leaf lettuce seedlings in plant factories and greenhouses, the effects of light intensity of 6000, 12000, 18000, 24000 and 30000 lx on growth morphology, nutritional quality, photosynthetic pigment and photosynthetic characteristics of purple leaf lettuce seedlings were studied with ‘Beizisheng 3’ as the experimental material under the condition of white light quality unchanged. The results showed that under the light intensity of 30000 lx, purple leaf lettuce seedlings grew well and the biomass, chlorophyll a content, chlorophyll b content, carotenoid content, total chlorophyll, soluble protein content, soluble sugar content, vitamin C content, anthocyanin content, net photosynthetic rate, transpiration rate and stomatal conductance were the largest, while the nitrate content and intercellular CO2 concentration were the lowest. However, chlorophyll b content, carotenoid content, soluble protein content and transpiration rate had no significant difference compared with those under 24000 lx light intensity, and the plant height was the highest under 24000 lx light intensity. Under the condition of white light quality, the most suitable light intensity for the growth of purple leaf lettuce seedlings is 30000 lx.
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1. Zhu Xuesong, Liu Muqing. A Preliminary Discus-sion on the Mechanism of the Effect of Light on Plant Growth [J]. Lamps and Lighting, 2016, 40(1):1-4.
2. Chen Xiaoling, Chen Qingxi. Research progress on the physiology of plants under low light stress [J]. Northern Horticulture, 2014 (6): 183-187.
3. Xu Gege. Effects of light environment regulation on plant growth and development [J]. Biotechnology World, 2015(12):214.
4. He Jingwen, Ming Meng, Lu Dan, et al. Research progress on the effects of low light stress on plant physiological characteristics [J]. China Agricultural Science Bulletin, 2018, 34(6): 123-130.
5. Wen Jing, Meng Lili, Zhang Jun, et al. Research progress on the effects of weak light on plant pho-tosynthetic characteristics [J]. Jiangsu Agricultural Science, 2014, 42(7): 22-24.
6. Wang Qi, Liu Jiayuan, Liu Wenke. Effects of LED red and blue light intensity patterns on the growth and yield of hydroponic lettuce[J]. Chinese Journal of Lighting Engineering, 2021, 32(2):1-5.
7. He Bingqing, Zhu Ning, Qi Changhong, et al. Screening test of lettuce varieties [J]. Vegetables, 2021(6):7981.
8. Liu Kaige, Song Yunpeng, Zhang Lili, et al. Com-prehensive comparison of the quality of purple-leaf lettuce and green-leaf lettuce[J]. Changjiang Vege-tables, 2021(6):51-53.
9. Fang Shuling. Effects of light intensity and nutrient solution concentration on the growth and nutrient use efficiency of hydroponic lettuce[D]. Yangling: Northwest A&F University, 2018.
10. Liu Wenke, Liu Yifei. Construction and application of light formula for LED smart plant factory [J]. China Lighting, 2017(10):1-3.
11. Xing Abao, Cui Haifeng, Yu Xiaoping, et al. Effects of light quality and photoperiod on plant growth and development [J]]. Northern Horticulture, 2018(3):163-172.
12. FU Y M, LI H Y, YU J, et al. Interaction effects of light intensity and nitrogen concentration on growth, photosyn-thetic characteristics and quality of let-tuce (Lactuca sativa L. var. youmaicai)[J]. Scientia horticul-turae , 2017, 214:51-57.
13. AKVILĖ V, AUŠRA B, VIKTORIJA V, et al. Lighting intensity and photoperiod serves tailoring nitrate assimilation indices in red and green baby leaf let-tuce[J]. Journal of the science of food and agri-cul-ture, 2019, 99(14 ): 6608-6619.
14. Ren Xuyan, Zhang Chan, Zhang Ya, et al. Effects of different red and blue LED light intensities on the growth and nutritional quality of purple-leaf lettuce [J]. North China Agricultural Journal, 2019, 34(6): 89-96.
15. Zhang Tao. Effects of different LED light qualities and combinations on the physiological basis and nutritional quality of leaf lettuce [D]. Zhengzhou: Henan Agricultural University, 2018.
16. Liu Huilian, Jiang Qianqian. Effects of different LED light qualities on the growth of tomato seedlings [J]. Northern Horticulture, 2020(18):38-42.
17. Liu Xiaoying, Jiao Xuelei, Xu Zhigang, et al. Effects of different red and blue LED light intensities on the growth and antioxidant enzyme activities of cherry tomato seedlings [J]. Journal of Nanjing Agricultural University, 2015, 38(5): 772-779.
18. Yan Xiaowen, Liu Zhenwei, Sun Li, et al. Effects of different light intensities on the growth and field characters of pumpkin seedlings [J]. Northern Hor-ticulture, 2021(15):7-13.
19. Jiang Shihao, Dang Kang, Zhang Yongtai, et al. Effects of light intensity, temperature and continu-ous light on nitrate accumulation in hydroponic lettuce[J]. Changjiang Vegetables, 2014(12):36-39.
20. Wei Jingjing, Song Shiwei, Liu Houcheng. Research progress on the effects of red and blue light on vegetable quality [J]. Chinese Journal of Lighting Engineering, 2018, 29(4):1-7, 30.
21. Ji Jiazeng, Li Congcong, Ding Huixia, et al. Effects of light intensity and photoperiod on the growth and quality of red-leaf lettuce [J]. Chinese Journal of Lighting Engineering, 2019, 30(6):163-166.
22. Zhou Qiuyue, Wu Yanyou, Xu Wenxiang, et al. Effect of light intensity on the accumulation of ni-trate in lettuce[J]. Agricultural Mechanization Re-search, 2009, 31(1):189-192.
23. Wang Zhimin, Song Feifei, Xu Zhigang, et al. Effects of different red and blue LED light intensity on the growth and quality of leaf lettuce[J]. China Vege-tables, 2011(16):44-49.
24. Gao Yong, Li Qingming, Liu Binbin, et al. Effects of different light quality ratios on photosynthetic characteristics and quality of purple lettuce [J]. Chinese Journal of Applied Ecology, 2018, 29(11): 3649-3657.
25. KWACK Y, KIM K K, HWANG H, et al. Growth and quality of sprouts of six vegetables cultivated under different light intensity and quality[J]. Horticulture environment & biotechnology, 2015, 56(4):437-443.
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