Title: Exploring How Diverse Light Intensity Affects Growth and Antioxidant Capacity of Industrial Hemp (Cannabis Sativa L.)
Abstract:Light is a crucial factor for the successful growth of hemp cultivation, exerting a significant impact on its overall development. However, there is a lack of comprehensive understanding regarding how...Light is a crucial factor for the successful growth of hemp cultivation, exerting a significant impact on its overall development. However, there is a lack of comprehensive understanding regarding how light intensity precisely regulates the growth and antioxidative enzyme activity of industrial hemp, indicating a need for further advanced research in this area. For better growth and light-intensity evaluation, we accessed different light-intensity (30 μmol.m-2s-1, 80 μmol.m-2s-1,130 μmol.m-2s-1 and 180 μmol.m-2s-1) effects on hemp growth and important antioxidant enzymes. Compared with 30 μmol.m-2s-1, 130 μmol.m-2s-1 significantly increased hemp growth in terms of stem diameter (53%), leaf, shoot, root fresh weight (142%, 65%, 193%), leaf, shoot, root dry weight (242%, 272%, 682%), and relative chlorophyll index. Further, Amino acid and soluble protein decreased with increasing light intensity while soluble sugar showed the opposite trend and increased with increasing light intensity. Malondialdehyde (MDA) content decreased (-29%) with increasing light intensity while SOD (81%), POD (145%), and CAT (158%) activity increased with increase in light intensity and was found maximum at 130 μmol.m-2s-1. We found that varying light intensity significantly influenced hemp biomass and the antioxidant capacity of hemp. Further, SOD, POD, and CAT enzymes activity is increased in optimum light intensity which can enhance light tolerance in hemp and save the plant from damage. Thus, these results indicated that optimum light intensity had a positive effect in improving the light intensity tolerance of industrial hemp.Read More
Publication Year: 2023
Publication Date: 2023-01-01
Language: en
Type: preprint
Indexed In: ['crossref']
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