20.500.12556/RUL-151821 Biostimulativni učinek mikroalg – testi z belo gorjušico (Sinapsis alba L.) in kumaro (Cucumis sativus L.) Biostimulative effect of microalgae - tests with white mustard (Sinapsis alba L.) and cucumber (Cucumis sativus L.) Mikroalge so enocelični organizmi, ki so sposobni življenja v različnih razmerah. Uspevajo lahko v odpadnih vodah, digestatu ali drugih odplakah, zato so velikokrat del krožnega gospodarstva. Mikroalge imajo lahko biostimulativen učinek na rast in razvoj rastlin ter povečajo odpornost tako na biotski kot abiotski stres. V nalogi smo z laboratorijskimi testi spremljali biostimulativen učinek mikroalg na rastline kumare (Cucumis sativus) in bele gorjušice (Sinapsis alba). Uporabili smo suspenzijo mikroalg s koncentracijo 2 g ss/L in deionizirano vodo kot kontrolo (dH2O). Poskus z belo gorjušico je pokazal, da imajo mikroalge biostimulativen vpliv na rast nadzemnega dela rastlin, za razliko od korenin, kjer vpliva ni bilo zaznati. Prav tako smo ugotovili, da prisotnost nitratnega dušika (NO3-N) v suspenziji mikroalg ne vpliva na začetno rast bele gorjušice. V raziskavi je bilo ugotovljeno, da sintetični avksin indol-3-mas lena kislina (IBA) ni vplival na tvorbo nadomestnih korenin pri kumarah, medtem ko rezultati kumar, tretiranih s suspenzijo mikroalg, kažejo biostimulativen učinek na tvorbo nadomestnih korenin. Sintetični citokinin benzil amino purin (BAP) ni imel pričakovanega citokininskega učinka na prirast kotiledonov pri kumarah. Prav tako biostimulativnega učinka nismo zaznali na prirastu kotiledonov kumar tretiranih s suspenzijo mikroalg. Iz rezultatov lahko sklepamo, da imajo mikroalge različen biostimulativni učinek glede na preučevane rastline ali njihove organe. Microalgae are unicellular micro-organisms capable of surviving in diverse environmental conditions, including wastewater, digestate, and other effluents. Therefore, they often play a role in the circular economy. Microalgae have the potential to biostimulate plant growth and development and increase resistance to abiotic and biotic stressors. In this study, we conducted laboratory experiments to evaluate the biostimulatory effect of microalgae on cucumber (Cucumis sativus) and white mustard (Sinapsis alba). In the experiment, we used a suspension of microalgae at a concentration of 2g/L, with deionized (dH2O) as a control. The results with white mustard showed a positive biostimulatory effect on aboveground plant growth, in contrast to roots where no such effect was observed. In addition, we found that the presence of nitrate nitrogen (NO3-N) in the microalgae suspension did not significantly affect the initial growth of white mustard. Our studies revealed that the synthetic auxin hormone indole-3-butyric acid (IBA) had no effect on adventitious root formation in cucumbers. Conversely, cucumbers treated with microalgal suspensions showed biostimulatory effects on adventitious root formation, but these effects were not necessarily due to auxins. The synthetic cytokinin hormone benzylaminopurine (BAP) showed no significant effect on cotyledon growth in cucumbers, nor did the microalgae treatment. From the results, it can be concluded that microalgae have different biostimulatory effects depending on the plant species or plant organ studied. mikroalge biostimulant avksin citokinin kumara Cucumis sativus bela gorjušica Sinapsis alba microalgae biostimulant auxin cytokinin cucumber Cucumis sativus white mustard Sinapsis alba true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-10-21 07:16:11 2023-10-21 07:16:21 2023-10-23 14:30:22 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 232565 169517315 37983.pdf 37983.pdf 1 D0ABE987C7336F6D67A4DD3C61159D1F 6036032161d6ddf4b29aa654c7f0c76efb96f802b8a1e5128ca9039218617551 f9805819-6fd0-11ee-8813-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=176895 Biotehniška fakulteta 0 0 0