Articles
Can the spectrum of LED affect the growth of olive seedlings?
Article number
1433_32
Pages
251 – 256
Language
English
Abstract
The olive tree is an important species among the oldest cultivated trees that are identified with immortality and long-life.
There are many research topics in breeding works: classification, characterization of biodiversity, cultivar development, and studies on obtaining new cultivars.
Although crossbreeding is among the most preferred breeding method, a long time is required for seeds of hybrid individuals to flowering and fruiting.
Germinated seedlings of olive plants show long-lasting juvenility, and different interventions are applied to shorten this period.
With the progress in the development of light-emitting diodes (LEDs), many studies have been conducted in recent years to understand the response of plants to these light sources.
In the present study, the effects of different LED light regimes on the development of olive seedlings were investigated.
In the study, red (R) (656 nm), far-red (FR) (736 nm), blue (B) (450 nm), red+blue (R+B), blue+far-red (B+F), red+far-red (R+F), red+blue+far-red (R+B+F) with white (W) light as control were used as LED light applications during seedling growth.
Only red light showed differences compared to others in terms of plant height.
This positive effect was also evident in terms of leaf number, stem diameter, number of nodes, plant fresh and dry weight, and root fresh and dry weight.
Other LED lamps containing red light gave the same meaningful results.
Lateral shoot number and length parameters were not affected by different light wavelengths.
The studies for more combinations of wavelengths are continuing.
There are many research topics in breeding works: classification, characterization of biodiversity, cultivar development, and studies on obtaining new cultivars.
Although crossbreeding is among the most preferred breeding method, a long time is required for seeds of hybrid individuals to flowering and fruiting.
Germinated seedlings of olive plants show long-lasting juvenility, and different interventions are applied to shorten this period.
With the progress in the development of light-emitting diodes (LEDs), many studies have been conducted in recent years to understand the response of plants to these light sources.
In the present study, the effects of different LED light regimes on the development of olive seedlings were investigated.
In the study, red (R) (656 nm), far-red (FR) (736 nm), blue (B) (450 nm), red+blue (R+B), blue+far-red (B+F), red+far-red (R+F), red+blue+far-red (R+B+F) with white (W) light as control were used as LED light applications during seedling growth.
Only red light showed differences compared to others in terms of plant height.
This positive effect was also evident in terms of leaf number, stem diameter, number of nodes, plant fresh and dry weight, and root fresh and dry weight.
Other LED lamps containing red light gave the same meaningful results.
Lateral shoot number and length parameters were not affected by different light wavelengths.
The studies for more combinations of wavelengths are continuing.
Authors
G. Çakırer Seyrek, Ö. Horzum, M.T. Özkaya, M. Ulaş, K. Demir
Keywords
wavelength, red light, juvenility, breeding
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