Vpliv predtretiranja semen koruze k kalijevim nano helatom in sulfatom na kalitev in lastnosti kalic v razmerah sušnega stresa

Maryam ZAHEDIFAR, Sadegh ZOHRABI

Povzetek


V raziskavi so bili preučevani učinki predtretiranja semen koruze s kalijevim nano helatom (KNC) in K-sulfatom(K) (0, 2 in 4 %) na kalitev in lastnosti kalic v razmerah sušnega stresa (SS) (0, -0.3, -0.6, -0.9, -1.2 in -1.5 MPa vodnega potenciala). Sušni stres je zmanjšal indekse kalitve in vitalnost kalic. Največja kalitev, največja sveža in suha masa semenskih korenin (RFM in RDM) so bile dosežene pri predtretiranju semen s KNC pri -0.3 MPa SS. Povprečni čas kalitve se je v razmerah sušnega stresa povečal v glavnem le pri ne predtretiranih semenih. Povečanje sušnega stresa na -1.2 MPa je vodilo k zmanjšanju sveže mase semenskih korenin in poganjkov, vendar je bilo zmanjšanje pri poganjkih večje. Največji dolžini semenskih korenin in poganjkov sta bli doseženi pri predtretiranju s 4 % KNC in brez sušnega stresa. Na osnovi te raziskave lahko zaključimo, da primerno predtretiranje semen lahko poveča njihovo toleranco na sušni stress.

Ključne besede


odstotek kalitve, vitalnostni indeks, predtretiranje semen, koruza, sveža in suha masa semenskih korenin in poganjkov

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2016.107.1.12

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