Seed germination of Calendula officinalis L. under influence of different light conditions
Date Issued
2022
Author(s)
Svjetlana Zeljković, Ivana Kozomara, Jelena Davidović Gidas, Margarita Davitkovska, Zvezda Bogevska
Abstract
The aim of this study was to examine germination rate and morphological characteristics of
English marigold seedlings under influence of different light conditions. Seeds of Calendula
officinalis L. were collected from the natural population of the Botanical garden of the
University of Banja Luka. Experiment was set up in four replicates for each light treatment.
Petri dishes with seeds were placed in growth chamber under artificial white (FLUO) and
blue, red, and combination of blue/red (LED) light with 16h/8h photoperiod. Germination
energy was tested after 7 days and germination of the seeds was tested after 14 days. Results
showed significant difference in germination energy, germination rate, hypocotyl height, root
length, and fresh weight. The highest average values of the germination energy and
germination rate of the Calendula officinalis L. were recorded under red LED light (32%;
47%) while the lowest values were recorded under blue LED light (1%; 23%). The highest
average values of hypocotyl height, root length and fresh weight were recorded also under
red LED light (3,70 cm; 6,33 cm; 0,97 g) while the lowest values were recorded under
combination of blue/red LED light (1,95 cm; 2,52 cm; 0,28 g). It can be concluded that the
use of red LED light is recommended in the seed germination phase, not only for better
germination but also for better morphological development.
English marigold seedlings under influence of different light conditions. Seeds of Calendula
officinalis L. were collected from the natural population of the Botanical garden of the
University of Banja Luka. Experiment was set up in four replicates for each light treatment.
Petri dishes with seeds were placed in growth chamber under artificial white (FLUO) and
blue, red, and combination of blue/red (LED) light with 16h/8h photoperiod. Germination
energy was tested after 7 days and germination of the seeds was tested after 14 days. Results
showed significant difference in germination energy, germination rate, hypocotyl height, root
length, and fresh weight. The highest average values of the germination energy and
germination rate of the Calendula officinalis L. were recorded under red LED light (32%;
47%) while the lowest values were recorded under blue LED light (1%; 23%). The highest
average values of hypocotyl height, root length and fresh weight were recorded also under
red LED light (3,70 cm; 6,33 cm; 0,97 g) while the lowest values were recorded under
combination of blue/red LED light (1,95 cm; 2,52 cm; 0,28 g). It can be concluded that the
use of red LED light is recommended in the seed germination phase, not only for better
germination but also for better morphological development.
Subjects
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