数字农科院2.0

Effect of Different Light-Dark Cycles on the Growth and Nutritional Quality of Celery

文献类型： 外文期刊

作者： Guo, Kexin;Guo, Zheng;Ge, Sang;Wang, Song;Liang, Lirui;Peng, Wenjun;Liu, Xinyuan;Huang, Xiaole;Qin, Chi;Luo, Zijing;Ouyang, Kewen;Pan, Tonghua;Jiang, Chengyao;Li, Mengyao;Zheng, Yangxia;Wang, Sen;Lu, Wei

作者机构：

关键词： celery;light-dark cycle;nutritional quality

期刊名称： AGRICULTURE-BASEL

ISSN：

年卷期： 2025 年 15 卷 21 期

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收录情况： 无来源刊（2025版）

摘要： Celery (Apium graveolens L.) is a widely cultivated leafy vegetable of significant agronomic and nutritional importance. Owing to its high nutritional value, global demand for celery has steadily increased. However, under natural cultivation conditions, uncontrolled light exposure often prolongs the seedling stage and impairs celery growth quality. Improving the nutritional quality of celery through artificial regulation of the light environment has therefore become an important research focus. This work aimed to elucidate the impact of varying light-dark cycles on the growth characteristics and nutritional attributes of celery. Six light-dark cycle treatments (4 h/2 h, 8 h/4 h, 16 h/8 h, 24 h/12 h, 32 h/16 h, and 40 h/20 h) were applied, using 'Oster Ziyu Xiangqin' as the plant material under a constant light intensity of 400 mu molm-2s-1. The results revealed that the 24 h/12 h light-dark treatment significantly enhanced plant height, total fresh weight, and root vigor and showed superior performance in photosynthetic and chlorophyll fluorescence parameters. The 32 h/16 h treatment significantly enhanced the accumulation of soluble sugars, proteins, total phenolic compounds, and flavonoids, as well as the activities of antioxidant enzymes, while reducing nitrate-nitrogen levels. In conclusion, the 24 h/12 h light-dark cycle was most conducive to the growth and photosynthetic performance of celery, whereas the 32 h/16 h treatment optimally enhanced its nutritional quality and antioxidant capacity.

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