Effects of different sources of light as night break on growth characteristics of Korean chrysanthemum (Chrysanthemum morifolium Ramat.) genotypes

Authors

  • Ranjit Singh Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana-141004, India
  • Madhu Bala Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana-141004, India

DOI:

https://doi.org/10.3329/bjb.v49i4.52512

Keywords:

Chrysanthemum, Night break, sources of light, LED light

Abstract

Longer photoperiods in the form of night break (NB) were applied in chrysanthemum to inhibit the flower bud differentiation for regulating the production and supply in the market. The present study reports the effect of three sources of light (Incandescent bulbs, compact fluorescent lights (CFL) and light emitting diodes-LED) as NB treatment on ten genotypes of Korean chrysanthemum for two years i.e. 2015 and 2016. The NB treatment with LED lights resulted in increased internodal length (8.20 and 9.00 mm), partitioning coefficient (30.50 and 31.50), number of stomata per unit area (56.08 and 56.87), anthocyanins (8.99 and 9.16 mg/g) and carotenoids (28.11 and 28.39 mg/g). However, leaf thickness, petiole length, leaf area index, and leaf weight ratio were affected non-significantly. But petiole girth was recorded maximum (1.22 and 1.49 mm) under incandescent bulbs which was at par with LED and significantly higher than CFL.  

Downloads

Download data is not yet available.
Abstract
133
PDF
132

Downloads

Published

2020-12-31

How to Cite

Singh, R., & Bala, M. (2020). Effects of different sources of light as night break on growth characteristics of Korean chrysanthemum (Chrysanthemum morifolium Ramat.) genotypes. Bangladesh Journal of Botany, 49(4), 967–974. https://doi.org/10.3329/bjb.v49i4.52512

Issue

Section

Articles