Abstract
Light qualities are considered to affect many plant physiological processes during growth and development. To investigate how light qualities make an influence on tomato seedlings under greenhouse conditions, the growth and morphological parameters of tomato seedlings (Fortizia F1RC hybrid) were studied under three supplemental light irradiations such as light-emitting diodes with nanoparticle coating (LED 1—Red light-emitting diodes); Blue, Green, Yellow, Red light-emitting diodes (LED 2), and traditional high-pressure sodium (HPS) lamps with different photosynthetic photon flux density and the same irradiation time for 33 days. Morphological appearances of three groups of tomato seedlings were different between light treatments, that is, the plants under LED-1 and LED-2 were shorter than those under HPS, while stem diameter, leaf area, dry and fresh weights, and health indices of tomato seedlings grown under alternative light sources were higher than of those cultivated under traditional HPS lights. However, the higher plant height was in plants containing traditional high-pressure sodium lamps treatment. Photosynthetic pigments were shown to have a significant difference under respective light irradiations of LEDs. The levels of photosynthetic pigments were higher in the leaves of seedlings under LED 1 and LED 2, and lower in those that underwent HPS control treatment. Based on the data of morphological and statistical analysis, LEDs with nanoparticle coating proved to be beneficial factors for the growth of tomato seedlings under greenhouse conditions.
Highlights
Proper growing conditions in the greenhouse are crucial to providing high-quality tomato seedlings and further tomato fruits yield
The results revealed that light qualities had significant effects on tomato seedlings’
The results showed thatthe plants under Light-emitting diodes (LEDs) lights with nanoparticle coating seedlings had better characteristics and improved morphological andgrown photosynthetic characteristics of tomato grown in the greenplant growth parameters
Summary
Proper growing conditions in the greenhouse are crucial to providing high-quality tomato seedlings and further tomato fruits yield. The development and physiology of plants are highly influenced by the light spectrum of the greenhouse environment. Light is known as the most important source of energy for plant photosynthesis and is an important signal of its growth and development. Its intensity, quality, and duration are the fundamental factors that affect the process of photosynthesis and plant growth. Light affects the content of primary and secondary metabolites in plants [1]. A lighting system can determine the cost and nutrient quality of plants [2,3]
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