OBRAVNAVANJE Z UVA + UVB VPLIVA NA ANTIOKSIDACIJSKI SISTEM IN KEMIZEM PETRŠILJA PRI RAZLIČNIH KONCETRACIJAH Zn

Masoumeh Abedini, Shirwan Malaei, Behrokh Daei-Hassani

Povzetek


Tanjšanje ozonske plasti, ki mu sledi povečano UV sončevo sevanje sta omejujoči dejavnik za nekatere rastline. V tej raziskavi je bil preučevan učinek UVA+UVB sevanja na hidroponsko gojen peteršilj pri različnih koncentracijah Zn (1.5 in 6.5 µm). UV sevanje je pri obeh koncentracijah cinka rahlo zmanjšalo rast in značilno povečalo vsebnost karotenoidov, flavonoidov, celokupnih fenolov in H2O2, a brez učinka na vsebnost klorofilov. Pri koncentraciji 1.5 µm Zn, je UV sevanje povzročilo značilno povečanje vsebnosti MDA in antocianinov, povečalo je aktivnosti encimov POD in CAT, a zmanšalo vsebnost topnih sladkorjev in beljakov. Pri koncentaraciji 6.5 µm Zn je UV sevanje povzročilo značilno povečanje v aktivnosti CAT, a ni imelo značilnega učinka na ostale parametre. Rezultati nakazujejo, da peteršilj dobro prenaša UVA+UVB sevanje, še posebej pri koncentraciji 6.5 µm Zn.

Ključne besede


antioksidacijski encimi; peteršilj; kemizem rastlin; UVA + B; Zn

Celotno besedilo:

PDF (English)

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DOI: http://dx.doi.org/10.14720/aas.2017.109.2.08

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