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Praćenje efekta citokinina i azot monoksida na senescenciju listova ljiljana ( Lillium
grandiflorum )

Tracking the efects of cytokinin and nitric oxide on senescence leaves of hyacinth ( Lillium
grandiflorum )

Autor: Mira Karadžid, učenica III razeda VII beogradske gimnazije

Mentor: Dr Aleksandra Mitrovid

REZIME

Senescencija, ili starenje, je poslednji, završni razvojni stupanj u životu listova i drugih biljnih organa ili
cele biljke. Senescencija se najbrže uočava na listovima po gubitku zelene boje.

Citokinini sprečavaju ili odlažu senescenciju listova.

Natrijum nitro prusid (SNP) je izvor ( donor) azot monoksida , koji, pored ostalih funkcija, učestvuje u
odlaganju senescencije.

Listovi ljiljana (Lillium grandiflorum) tretirani su rastvorima kinetina i SNP-a različitih koncentracija.

Dobijeni rezultati pokazuju da i kinetin (0,005mg/l) i SNP (0.1mg/l) utiču na odlaganje starenja listova
ljiljana.

KLJUČNE REČI: Senescencija, kinetin, azot-monoksid, natrijum-nitroprusid

SUMMARY

Senescence, or ageing, is the last evolucional finite degree in life-time of leaves and other plant’s organs
or the whole plant. Senescence is the fastest marked on leaves, as they lose their green colour.

Cytokinins disable or delay senescence of leaves.

SNP is resource ( donor) of nitrogen monoxide, which, beside the other function, takes part in delaying of
senescence.

Leaves of hyacinth (Lillium grandiflorum) are treated by solution of kinetin and SNP that are different
comcentration.

Derived aftermath shows that kinetin (0,005mg/l ) and SNP (0.1mg/l) exert influence on delaying of
aging of hyacinth leaves.

Key-words: Senescence, kinetin, nitrogen monoxide, SNP