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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(9): 458-465
DOI: https://doi.org/10.20546/ijcmas.2017.609.055


Effect of Photosynthetically Active Radiation (PAR) from LEDs on Growth and Development of Chrysanthemum morifolium Ramat. cv. Zembla
Sunil Kumar1*, M.C. Singh1, Subedar Yadav1 and D.K. Sharma2
1Division of Floriculture and Landscape Architecture, IARI, New Delhi -110012, India
2Centre for Environment Science and Climate Resilient Agriculture, IARI,New Delhi -110012, India
*Corresponding author
Abstract:

The experiment was conducted to study the effect of photosynthetically active radiation (PAR) on growth and development of chrysanthemum using LEDs. The chrysanthemum cv. Zembla were exposed to different photoperiodic treatments of day length extension illuminating from photosynthtically active radiation from LEDs for 6, 9, 12, 15 days at 15h/day in growth chamber except for control. Every batch after exposure at 6, 9, 12, 15 days under red/blue LEDs was transferred to the chamber with white LEDs. All the growth and physiological parameters (plant height, number of leaves, internode length, leaf chlorophyll, leaf area and net photosynthetic rate) differed significantly during different stages of growth and found that the increased in photoperiod by 15 days with long days from LEDs there was an increase in plant height (43.05cm), inter nodal length (2.60cm), number of leaves (24.50) and leaf area (224.83 cm2) cv. Zembla maximum (15 days) exposure in LEDs. Early flower response was noticed which was advanced by 7 days as compared with control. Bud and flower diameter (5.78 mm and 80.74 mm) were maximum. Fresh and dry weight in stems and flower were significant which might have contributed with increased total chlorophyll (4.43 mg g-1 fw) content as application of light emitting diodes (LEDs) might be resulted in long day effect without disturbing the required minimum dark period for flower induction.


Keywords: Chrysanthemum, Light emitting diodes (LEDs), Photosynthtically active radiation (PAR), Photoperiod, Long day (LD).
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How to cite this article:

Sunil Kumar, M.C. Singh, Subedar Yadav and Sharma, D.K. 2017. Effect of Photosynthetically Active Radiation (PAR) from LEDs on Growth and Development of Chrysanthemum morifolium Ramat. cv. ZemblaInt.J.Curr.Microbiol.App.Sci. 6(9): 458-465. doi: https://doi.org/10.20546/ijcmas.2017.609.055