[b]Effects of LED Light on Seed Emergence and Seedling Quality of Four Bedding Flowers[/b]
Journal Title: Journal of Ornamental and Horticultural Plants - Year 2016, Vol 6, Issue 2
Abstract
Recently much attention has been paid by horticulturists to lightemitting diodes as a new source of economical and spectral-selective light. The reason is mainly coming from their versatility in handling and mounting, long working time, wattage use efficiency and lower heat production. In this study we examined their potential in promoting seed germination and producing quality flower seedlings for which we designed four growth chambers each equipped with a different light quality sources, namely red, blue, combination of 25% blue and 75% red and fluorescent lamps. Seeds of four annual bedding flowers including impatiens (Impatiens balsamina), zinnia (Zinnia elegans), petunia (Petunia × hybrida) and verbena (Verbena aubletia) were sown and grown to produce seedlings. Plants were illuminated 12 hours per day in the growth chambers. According to the results, seedlings under red light showed the highest emergence percentage, rate and value. Light quality variably affected growth characteristics among plant species. Impatiens and zinnia plants under blue light showed a significant increase in leaf number. The stem diameter of impatiens increased under red light. By contrast, in petunia stem diameter increased under blue light significantly. Inclusion of 25% blue light to red light reduced hypocotyl and shoot height and increased root fresh weight and root length of most plant types. Light quality did not affect the time of emergence (T50), true leaf stage, four-leaf stage and shoot fresh weight. Our study demonstrated that light-emitting diodes could be an effective and reliable source of lighting under controlled environment for production of quality flower seedlings. Generally, the pure red light enhanced seedling emergence and during growth period, high quality seedlings could be produced when 25% blue light was added to red light.
Authors and Affiliations
Behnaz Akbarian, Mansour Matloobi, Nasser Mahna
Keywords
Related Articles
- EP ID EP112551
- DOI -
- Views 148
- Downloads 0
Improvement Vase Life of Chrysanthemum ([i]Dendranthema grandiflorum[/i] L.) Cut Flowers Using Essential Oils of [i]Geranium, Eucalyptus[/i] and [i]Myrtus[/i]
This study carried out based on a randomized completely design with 10 treatments geranium, eucalyptus and myrtus extraction, in 3 levels (2, 6 and 10 ml in 600 ml of distilled water) and control (distilled water) with...
[b]The Enhancement of Drought Stress Tolerance of Kentucky Bluegrass by Prohexadione-Calcium Treatment[/b]
Kentucky bluegrass (Poa pratensis L.) is one of the most widely used turfgrasses for home lawns, golf courses, parks, and athletic fields in temperate climates. Oxidative stress caused by drought stress is a majo...
[b]The Role of Preservative Compounds on Number of Bacteria on the End of Stems and Vase Solutions of Cut Gerbera[/b]
This study was conducted to evaluate the effect of preservative solutions on vase life, number of bacteria in the end of stem and in vase solution of cut gerbera 'Double Dutch' and 'Red Explotion'. Cut fl...
[b]Study on Some Chemical Compounds on the Vase Life of Two Cultivars of Cut Roses [/b]
Rose (Rosa hybrida L.) is one of the mostly cultivated cut flowers in Iran and around the world. The study was carried out to increase the vase life and quality of cut rose ‘Grand Prix` and ‘Avallanche` by using various...
[b]Turf Quality Characteristics of Crested Wheatgrass ([i]Agropyron cristatum[/i](L.)Gaertner.) SpecimensNative to Iran[/b]
Crested wheatgrass (Agropyron cristatum (L.) Gaertner.) is a potential source of low-maintenance turf species for use in areas with less water. The main goal of this study was to evaluate turf quality characteris...