HUBEI AGRICULTURAL SCIENCES ›› 2024, Vol. 63 ›› Issue (7): 87-91.doi: 10.14088/j.cnki.issn0439-8114.2024.07.014

• Horticulture & Local Products • Previous Articles     Next Articles

Effects of light qualities on physiological characteristics and antioxidant enzyme activities of alfalfa seedlings

LIU Nai-sen, LIU Fu-xia, GUO Jing-yu, WANG Xu-qi   

  1. Huaiyin Normal University/Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection Co-constructed by the Province and Ministry/Jiangsu Key Laboratory for Eco-Agricultural Biotechnology Around Hongze Lake/ Jiangsu Engineering Research Center for Cyanophytes Forecast and Ecological Restoration of Hongze Lake, Huai'an 223300, Jiangsu,China
  • Received:2023-03-16 Online:2024-07-25 Published:2024-07-24

Abstract: The effects of different light qualities [red light, blue light, red-blue mixed light, white light (CK)] on the physiological characteristics and antioxidant enzyme activities of alfalfa sprouts were studied. The results showed that the soluble sugar content was significantly increased under red light, while blue light and red-blue mixed light reduced the soluble sugar content. The soluble protein content, root activity and peroxidase(POD) activity with blue light were significantly higher than those of other light quality treatments. Compared with other light quality treatments, the vitamin C content and chlorophyll content with red-blue mixed light were the highest, and the determination coefficient R2 of the fitting equation of chlorophyll content and fresh weight per 100 plants was 0.930 9. There was no significant difference in superoxide dismutase(SOD) activity between different light quality treatments. The vitamin C content per 100 plants and the soluble protein content per 100 plants with red-blue mixed light were higher. Red-blue mixed light was a better light source for supplementing light in the production of alfalfa seedlings.

Key words: light quality, alfalfa seedlings, physiological characteristics, antioxidant enzyme activity

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