The effect of seaweed extract and LED on the growth of Lisianthus

Document Type : Original Article

Authors

1 Former MS student, Department of Horticulture, College of Agriculture Isfahan University of Technology, Isfahan, Iran.

2 Associate Professor, Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.

Abstract

Introduction: The lisianthus flower with the scientific name of Eustoma grandiflorum is a relatively new  cut flower that has quickly become one of the top ten cut flowers in the world.
Material and methods: This study was performed to investigate the effect of LED light and seaweed extract (SWE) on seedling growth of two Lisianthus cultivars “Arena” and “Mariachi” in the factorial experiment based on completely randomized design with three replications with treatments of blue LED lights 100%, red 100%, blue-red 70:30%, white 100% and five concentrations of 125, 250, 500, 750 and 1000 mll-1 of seaweed extract (SWE) to evaluate the effect Light quality and seaweed extract were measured on seedling growth. According to the results of the first stage, Arena cultivar had a significant increase compared to Mariachi cultivar in most traits such as leaf diameter, leaf width, internode length, and stem length.
Results and discussion: The highest leaf width and stem diameter were observed in blue light and the highest leaf diameter was observed in red-blue hybrid light. Different concentrations of seaweed extract had a longer internode length than the control treatment. Plant genetics play an important role in influencing the wavelength of light and SWE, so that the highest leaf diameter was observed in “Arena”  cultivar and combined light blue-LED and the highest internode length was observed in “Arena”  cultivar and different concentrations of  SWE and According to the results of the second stage, “Arena” cultivar had a significant increase compared to “Mariachi” cultivar in most traits such as lighter and drier shoots, wetter and drier roots, leaf area, root surface, and soluble sugar content. At this stage of the experiment, plant genetics also played a significant role in the effect of light wavelength and seaweed extract (SWE), so that the highest weight and dry aerial parts in “Arena”  cultivar, the concentration of 125 ml/L of SWE and blue light and the highest soluble sugar content was observed in “Arena” cultivar, the concentration of 125 ml/l of SWE and combined light blue and red, and the highest content of starch in “Mariachi” cultivar, concentration of 125 ml/l of SWE and blue light was observed.
Conclusions: Conclusively, Arena cultivar can be recommended under the treatment of blue light and a concentration of 125 ml/l of seaweed extract (SWE) to produce a better product.

Keywords

References

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