Uticaj bakterija na morfo-fiziološke karakteristike paradajza (Solanum licopersicum L.)

Abstract

U ovom radu ispitivani su efekti primene bakterijskih izolata: Bacillus velezensis SZMC 24986, Pseudomonas resinovorans SZMC 25872 i Arthrobacter globiformis SZMC 25081 na dva genotipa paradajza Gružanski zlatni i Narvik gajenih u plasteniku. Reakcije ispitivanih biljaka praćene su kvantifikovanjem morfoloških (visina biljke, sveža i suva masa nadzemnog dela biljke i korena) i fizioloških (relativni sadržaj hlorofila, epidermalnih flavonola, antocijana i balansa azota) parametara. Visina biljaka i fiziološki parametri mereni su 7. 14., 21. 28. i 35. dana od početka primene tretmana. Dobijeni rezultati u ovom radu ukazuju na specifičnost odnosa genotip-mikroorganizam. Uticaj primenjenih tretmana na morfo-fiziološke parametre varirao je specifično u zavisnoti od genotipa kao i od razmatranog perioda merenja. Kod genotipa Gružanski zlatni, primenjeni tretmani su uslovili značajno povečanje u vrednostima većine ispitivanih parametara u odnosu na kontrolu. U skladu sa dobijenim rezultatima dalja istraživanja će se usmeriti na interakcije između bakterija promotora biljnog rasta i genotipa GZ, sa fokusom na korisne efekte koji pomenute bakterije imaju na biljku.

In this paper, the effects of bacterial isolates: Bacillus velezensis SZMC 24986, Pseudomonas resinovorans SZMC 25872 and Arthrobacter globiformis SZMC 25081 on two genotypes of Gružanski zlatni and Narvik tomatoes grown in a greenhouse were investigated. The reactions of the examined plants were monitored by quantification of morphometric (plant height, fresh and dry mass of the aboveground part of the plant and roots) and physiological (indices of chlorophyll, epidermal flavonols, anthocyanins and nitrogen balance) parameters. Plant height and physiological parameters were measured on the 7th, 14th, 21st, 28th and 35th days from the beginning of the treatment. The results obtained in this paper indicate the specificity of the plant genotype-microorganism relationship. The influence of the applied treatments on the morpho-physiological parameters varied specifically depending on the genotype as well as on the considered measurement period. In the Gružanski zlatni genotype, the applied treatments caused a significant increase in the values of most of the examined parameters in relation to the control, which makes it superior to the Narvik genotype. Therefore, further research will focus on the interactions between plant growth promoter bacteria and the GZ genotype, with a focus on beneficial effects that these bacteria have on the plant.