Faculty of Agricultural Sciences and Food

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Access type: UnknownAuthor: search.filters.author.Jelena Davidović Gidas

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    Influence of Microbiological Preparation Bacillomix on the Germination of Challistephus chinensis L.
    (University of Banja Luka Faculty of Agriculture University City Bulevar vojvode Petra Bojovića 1A 78000 Banja Luka, Republic of Srpska, B&H, 2023)
    Svjetlana Zeljković
    ;
    Marina Pekez
    ;
    Jelena Davidović Gidas
    ;
    Margarita Davitkovska
    ;
    Emina Mladenović
    The use of biostimulant create better conditions for the growth and development of the germ and germination. Bacillomix is 100% natural biostimulant and soil improver with increased content of live bacterial cells obtained from 12 powerful Bacillus sp. strains. The use of this preparation has many positive effects: stimulate of germination, rooting and growth of plants; improve the microbiological structure of the soil; keep the plants healthy through the growing season; increases the plants resistant to stress; supplies the plant with nitrogen, phosphorus, potassium and sulfur. The aim of this study was to examine the impact of microbiological preparation Bacillomix on the germination and germination energy of the seeds Challistephus chinensis L. In the experiment were totally 480 seeds of this species. The experiment was set up in the laboratory on Faculty of Agriculture, University of Banja Luka and consisted of control (K) and treatment with microbiological preparation Bacillomix in two concentrations (T1 100% and T2 10%). After 7 days germination energy and after 14 days germination of the seeds were tested. The highest average values of the germination energy were recorded in the treatment plants (73.75% T1, 64.38% T2), while the lowest values were recorded in control plants (60%). The highest average germination values were also recorded in treatment (78.755% T1, 73.75% T2), and the lowest in the control group (70%). The highest average values of hypocotyl height, root length and fresh weight were recorded also in the treatment plants (1.47 cm T1 and 1.01 cm T2; 4.59 cm T1 and 3.28 cm T2; 0.91 g T1 and 0.65 g T2) while the lowest values were recorded in control plants (0.99 cm; 2.87 cm; 0.61 g). It can be concluded that the use of a natural biostimulant is recommended for better germination and better morphological development of plants.
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    Seed germination of Calendula officinalis L. under influence of different light conditions
    (2022)
    Svjetlana Zeljković
    ;
    Ivana Kozomara
    ;
    Jelena Davidović Gidas
    ;
    ;
    Zvezda Bogevska
    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.