Effects of Different Light Intensity on the Growth and Nutrients Content of Gynura

Abstract:

Light condition has significant effects on plant growth and nutrient accumulation. The growth and nutrients content of Gynura (Begonia fimbristipulata) were studied under three light intensities (natural field, 100% full sunlight (L0); 50% canopy cover (L1); 70% canopy cover (L2)) in Fuyang, China. The results showed that plant height, ground diameter and number of branches were no significant difference between L0 and L1 treatments (P>0.05), these variables were significantly lower in L2 treatment than that in L0 treatment (P<0.05). Potassium (K), phosphorus (P), vitamin C (Vc) and soluble sugar content in Gynura’s leaves reduced with decreasing light intensity. The content of protein and iron (Fe) were no significant difference among the three light treatments (P>0.05). The content of calcium (Ca) markedly increased in L1 treatment compared with L0 treatment (P<0.05), and it greatly declined in L2 treatment. The change of light conditions had less impact on the water-soluble amino acid content (except for alanine, serine, and glutamic acid). These results indicate that Gynura is suitable to cultivate under the forest with 50% canopy cover.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 3766-3769
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.3766
• Online since: June 2014
• Authors: Xiang Rong Cheng*, Jia Liu, Jun Shu, Mu Kui Yu
• Keywords: Agroforestry System, Growth, Gynura, Light Intensity, Nutrient

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