diplomsko delo
Janoš Portir (Avtor), Marko Zupan (Mentor), Marko Flajšman (Komentor)

Povzetek

V diplomski nalogi smo proučevali, kako se navadna konoplja odziva na zelo visoke koncentracije kadmija, svinca in cinka v tleh in kakšen je učinek posameznega elementa na rast in razvoj rastline. V lončnem poskusu smo testirali sprejem posamezne težke kovine: kadmija (Cd), svinca (Pb) in cinka (Zn) v različne dele dveh sort ('Tisza' in 'Futura 75') navadne konoplje. Iz neonesnaženih tal smo z dodajanjem težkih kovin v kloridnih oblikah (PbCl2, CdCl2H20, ZnCl2) pripravili dve stopnji kontaminacije tal za vsak posamezen element: Pb-1/2 (1000 mg/kg), Pb-2/2 (1500 mg/kg ), Cd-1/2 (50 mg/kg), Cd-2/2 (100 mg/kg), Zn-1/2 (2500 mg/kg) in Zn-2/2 (5000 mg/kg). Rastline smo gojili tudi v nadzorovanih neonesnaženih tleh. Rastline smo gojili v loncih volumna 3,5 L do botanične zrelosti. V vsakem loncu je bila posajena ena rastlina, za eno obravnavanje smo uporabili 10 loncev iste sorte,10 rastlin sorte 'Tisza' in 10 rastlin sorte 'Futura 75. Poskus je potekal v rastlinjaku med januarjem in julijem 2018. Žetev je potekala julija 2018, ko je bilo seme zrelo. Za določanje težkih kovin v različnih rastlinski delih smo vzorčili: korenine (ločeno za glavne in stranske), steblo (ločeno za stržen in povrhnjico) in socvetja. Največ Cd, Pb in Zn so rastline obeh sort privzele v stranske korenine, fitotoksične učinke je bilo opaziti samo, kjer smo v tla dodali ZnCl2, tam so rastline propadle zaradi prevelike koncentracije soli. Vsi rastlinski deli konoplje, ki je rastla v tleh onesnaženih s težkimi kovinami, vsebujejo težke kovine, zato je njihova uporaba omejena.

Ključne besede

težke kovine;svinec;Pb;kadmij;Cd;cink;Zn;fitoremediacija;konoplja;lončni poskus;Cannabis sativa L.;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL BF - Biotehniška fakulteta
Založnik: [J. Portir]
UDK: 631.453:546.47/.48:546.815:633.522:502.174(043.2)
COBISS: 9333113 Povezava se bo odprla v novem oknu
Št. ogledov: 735
Št. prenosov: 212
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Content of cadmium, lead, and zinc in two hemp varieties (Cannabis sativa L.) grown in a pot experiment with spiked soils
Sekundarni povzetek: In the thesis, we studied how hemp responds to extremely high concentrations of cadmium, lead and zinc in the soil and the effects of each given element on the growth and development of the plant. In a pot experiment, we tested the uptake of heavy metals: cadmium (Cd), lead (Pb), and zinc (Zn) into various parts of two hemp varieties ‘Tisza’ and ‘Futura 75’. For each element, two levels of soil contamination were prepared by adding heavy metals in chloride forms to non-contaminated soil: Pb-1/2 (1000 mg/kg), Pb-2/2 (1500 mg/kg), Cd-1/2 (50 mg/kg), Cd-2/2 (100 mg/kg), Zn-1/2 (2500 mg/kg) in Zn-2/2 (5000 mg/kg). The plants were grown in 3,5 L pots, one plant per pot, 10 plants of each variety in each combination, 70 plants together with control soil. The experiment was carried out in a greenhouse between January and July 2018. The results were harvested in July 2018 when the seeds were ripe. To determine the presence of heavy metals in various parts of the plant, we sampled: roots (primary and lateral individually), the stem (fibres and hurds individually), and inflorescences. Both of the varieties showed the highest content of Cd, Pb, and Zn in the fibrous roots, while phytotoxic effects (the plants decayed) were observed only in combinations where ZnCl2 was added and it was a concesuence of a high salt concentration. All parts of hemp grown in the soil contaminated with heavy metals contain heavy metals, therefore their use is limited.
Sekundarne ključne besede: heavy metals;lead;cadmium;zinc;phytoremediation;hemp;pot experiment;spiked soils;
Vrsta dela (COBISS): Diplomsko delo/naloga
Študijski program: 0
Konec prepovedi (OpenAIRE): 1970-01-01
Komentar na gradivo: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Strani: IX, 29 f.
ID: 11235001