Effects of Variable Lighting Intensity on Growth Characteristics and Nutritional Quality of Hydroponically Grown Arugula（Eruca sativa Mill.）

Sun Ming-han; Zhou Fu-jun; Liu He; Zhao Jing

Journal of Northeast Agricultural University(English Edition) > 2023 > 30(1): 85-96.

Sun Ming-han, Zhou Fu-jun, Liu He, Zhao Jing. Effects of Variable Lighting Intensity on Growth Characteristics and Nutritional Quality of Hydroponically Grown Arugula（Eruca sativa Mill.）[J]. Journal of Northeast Agricultural University(English Edition), 2023, 30(1): 85-96.

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Effects of Variable Lighting Intensity on Growth Characteristics and Nutritional Quality of Hydroponically Grown Arugula（Eruca sativa Mill.）

1. College of Engineering, Northeast Agricultural University;
2. College of Mechanical and Marine Engineering, Beibu Gulf University;
3. College of Machinery, North China University of Water Resources and Electric Power

Funds:

Supported by the National "the 13th Five-Year" Key R&

D Program (2016YFD0701905)

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Abstract

Abstract

Arugula （Eruca sativa Mill.）,as an edible medicinal vegetable of peculiar flavor,is served as uncooked dish.The influence of variable lighting intensity （LI） on the growth characteristics and nutritional quality of hydroponically grown arugula was investigated by using light-emitting diodes （LEDs） to light the hydroponically grown arugula for a reference for industrialized arugula production.The dynamic demands of arugula for LI in the seedling stage,initial growth stage and vigorous growth stage were tested under two light quality conditions including a red/blue light ratio of 7:1 and a light/dark photoperiod of 12 h/12 h.Then,the curves of variable LI-induced changes in the growth indices of arugula in different development periods were drawn.Next,the influence of variable LI on the growth characteristics and nutritional quality of arugula was investigated by measuring the dry/fresh weight ratio,chlorophyll content,vitamin C content and soluble protein content.Variable LI significantly increased the height,stem diameter,leaf width,dry/fresh weight ratio,chlorophyll content and soluble protein content of arugula plant.Plant height,stem diameter,dry/fresh weight ratio,chlorophyll content and soluble protein content were the highest in the group exposed to LI of 200,300 and 300μmol·m^-2·s^-1 during the seedling stage,initial growth stage and vigorous growth stage,respectively.The greatest leaf width was achieved at LI of 100,250and 350μmol·m^-2·s^-1,respectively.High intensity LI markedly repressed the synthesis of vitamin C.
- arugula,
- LED,
- lighting intensity,
- growth characteristics,
- nutritional quality,
- plant factory

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References (29)

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