Vpliv selena na pšenico v sušnem stresu v rastlinjaku in na polju

Roghieh HAJIBOLAND, Noushin SADEGHZADEH, Nashmin EBRAHIMI, Behzad SADEGHZADEH, Seyed Abolgasem MOHAMMADI

Povzetek


Raziskovan je bil vpliv selena (Na2SeO4) na rastline dveh genotipov navadne pšenice, v sušnih razmerah oziroma pri dobri oskrbi z vodo, v rastlinjaku (15 µg Se L-1) in na polju (20-60 60 g ha-1). Dodatek Se je povečal sušino rastlin in pridelek zrnja pri obeh načinih oskrbe z vodo. Se je vplival na povečano koncentracijo pigmentov in na povečanje fotosinteze listov pri obeh oskrbah z vodo. Rezultati kažejo, da dodatek Se omili vpliv sušnega stresa s povečanjem fotosinteze, zaščito lista s fotokemičnimi procesi, akumulacijo organskih ozmotikov in povečano učinkovitostjo porabe vode. V razmerah dobre oskrbe z vodo je bila povečana rast, omogočena z dostopnostjo selena, povezana z intenzivnejšo fotosintezo in večjo učinkovitostjo uporabo vode, daljšimi in debelejšimi koreninami in večjo vsebnostjo vode.

Ključne besede


pšenica; suša; organski ozmotiki; fotosinteza; selen; vodna oskrba

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2015.105.2.01

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