Effects of salinity on in vitro growth and photosynthesis of common centaury (Centaurium erythraea Rafn.)

  • Siler B
  • Misic D
  • Filipovic B
  • et al.
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Abstract

The effects of salinity on in vitro growth, morphogenesis, photosynthetic rate (Pn), PSII efficiency (Fv/Fm), and chlorophyll content were investigated in Centaurium erythraea Rafn. Root growth was more adversely affected by increasing NaCl concentration than was shoot growth. High salt concentrations were effective in induction of axillary and adventitious buds on shoots, with 400 mM NaCl being the most efficient one. Values of Pn and Fv/Fm increased at moderate salt levels, but decreased when 400 mM NaCl was applied. Chlorophyll a and b contents and total chlorophyll had a decreasing trend with increasing supply of NaCl in the growth medium. .Pracen je efekat NaCl (u rasponu koncentracija od 0 do 400 mM) na rast, morfogenezu, intenzitet fotosinteze (Pn), efikasnost fotosistema II (Fv/Fm) i sadrzaj hlorofila a i b kod vrste Centaurium erythraea Rafn. u in vitro uslovima. Utvrdjeno je da su koreni kicice osetljiviji na visoke koncentracije soli u hranljivoj podlozi u poredjenju sa izdancima. Visoke koncentracije soli su se pokazale efikasnim u pogledu indukcije formiranja aksilarnih i adventivnih pupoljaka na izdancima. U uslovima umerenog stresa (100 i 200 mM NaCl), vrednosti Pn i Fv/Fm rastu u poredjenju sa vrednostima dobijenim kod kontrolne grupe biljaka. Primena 400 mM NaCl dovela je do opadanja vrednosti Pn i Fv/Fm ispod kontrolnih vrednosti. Sadrzaj hlorofila a i b, kao i ukupnog hlorofila opada sa porastom sadrzaja soli u hranljivoj podlozi. Odnos Chl a/b takodje opada. Moze se zakljuciti da je Centaurium erythraea Rafn vrsta koja je otporna na povecani salinitet podloge u kojoj raste. Prema tome, moze se pretpostaviti da je komercijalno gajenje ove vrste kicice ostvarivo na zaslanjenim terenima. .

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APA

Siler, B., Misic, D., Filipovic, B., Popovic, Z., Cvetic, T., & Mijovic, A. (2007). Effects of salinity on in vitro growth and photosynthesis of common centaury (Centaurium erythraea Rafn.). Archives of Biological Sciences, 59(2), 129–134. https://doi.org/10.2298/abs0702129s

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