EJPAU 2006. Zalewska M. , Woźny A. EFFECT OF BLUE LIGHT ON THE GROWTH OF CHRYSANTHEMUM UNDER LONG AND SHORT DAY

Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

2006
Volume 9
Issue 4

Topic:

Horticulture

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Zalewska M. , Woźny A. 2006. EFFECT OF BLUE LIGHT ON THE GROWTH OF CHRYSANTHEMUM UNDER LONG AND SHORT DAY, EJPAU 9(4), #44.
Available Online: http://www.ejpau.media.pl/volume9/issue4/abs-44.html

EFFECT OF BLUE LIGHT ON THE GROWTH OF CHRYSANTHEMUM UNDER LONG AND SHORT DAY

Małgorzata Zalewska¹, Anita Woźny²
¹ Department of Ornamental Plants and Vegetable Crops, University of Technology and Life Sciences in Bydgoszcz, Poland
² Department of Ornamental Plants and Vegetable Crops, Faculty of Agriculture and Biotechnology, University of Science and Technology, Bydgoszcz, Poland

ABSTRACT

In many ornamental plants species the light colour can, more or less considerably, modify growth and flowering. Literature offers information on the growth inhibition of seedlings, transplants and cuttings of ornamental plants exposed to blue light.

In the present experiment Chrysanthemum × grandiflorum (Ramat.) Kitam. ‘Boulou White’ was exposed to blue and day light (control), at 3 quantum irradiance levels: 90, 110 and 140 µmol·m^-2·s^-1. The source of light was made up by 36 W fluorescent lamps.

During the cultivation in controlled climate conditions a long day and a short day, each time 4-week long, were applied.

It was demonstrated that the blue light of the highest quantum irradiance both under long- and short-day conditions inhibited the plant growth. The blue light applied under short-day conditions slightly decreased the number of chrysanthemum leaves.

Key words: Chrysanthemum ?grandiflorum (Ramat.) Kitam., quantum irradiance, blue and day light, fluorescent lamp, long and short day.

Małgorzata Zalewska
Department of Ornamental Plants and Vegetable Crops,
University of Technology and Life Sciences in Bydgoszcz, Poland
Bernardyńska 6, 85-029 Bydgoszcz, Poland
Phone: (+48) 52 374 95 36
email: zalewska@utp.edu.pl

Anita Woźny
Department of Ornamental Plants and Vegetable Crops, Faculty of Agriculture and Biotechnology, University of Science and Technology, Bydgoszcz, Poland
Bernardyńska 6/8, 85-029 Bydgoszcz, Poland
email: wozny@utp.edu.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.