Učinki hladnega predtretiranja in okoljskih dejavnikov na prekinitev dormance in kalitev treh vrst muhvičev

Vajihe AMINI, Faezeh ZAEFARIAN, Mohammad REZVANI

Povzetek


Učinki trajanja mokrega in suhega hladnega predtretiranja, pH, ozmotskega in solnega stresa ter globine setve na kalitev in vznik so bili preučevani pri treh vrstah muhviča (sivozeleni muhvič- Setaria pumila (Poir.) Roem. & Schult. (= S. glauca auct.)., vretenčasti muhvič - S. verticillata (L.) P. Beauv. in zeleni muhvič - S. viridis (L.) P. Beauv.) v rastlinjaku in laboratoriju. Mokro in suho hladno predtretiranje v trajanju 45 dni je pospešilo kalitev semen sivozelenega muhviča v primerjavi s kontrolo. Isto obravnavanje ni imelo značilnega vpliva na prekinitev dormance semen pri zelenem in vretenčastem muhviču. Največja kalitev muhvičev (S. verticillata, S. viridis) je bila dosežena pri semenih, tretiranih s pufersko raztopino s pH 7. Povečanje ozmotskega in solnega stresa je zmanjšalo kalitev vseh vrst muhvičev Semena vretenčastega muhviča so bila bolj odporna na večji sušni stress kot semena zelenega in sivozelenega muhviča. Semena sivozelenega in vretenčastega muhviča so bila bolj odporna na velik slanostni stress kot semena zelenega muhviča. Vznik vseh treh vrst muhvičev se je zmanjševal s povečevanjem globine setve, na globini 8 cm kalitve ni bilo.

Ključne besede


ozmotski stres; solni stress; globina setve; kalitev; Setaria pumila; Setaria verticillata; Setaria viridis

Celotno besedilo:

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DOI: http://dx.doi.org/10.14720/aas.2015.105.2.10

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