Določitev optimalnega časa predobdelave semen in koncentracijski protokol za izboljšanje kalitve semen paprike (Capsicum annuum L.)

Hassen ALOUI, Maher SOUGUIR, Chérif HANNACHI

Povzetek


Predobdelava semen pred kalitvijo je preprosta metoda za izboljšanje kalitve semen in zmanjšanje učinkov izpostavljenosti stresu. Predmet raziskave je bil izdelava optimalnega protokola predobdelave semen za tri sorte paprike (Capsicum annuum L.): ‘Beldi’, ‘Baklouti’ and ‘Anaheim Chili’. Semena so bila pred kalitvijo obdelana z raztopinami NaCl, KCl in CaCl2 (0, 10, 20 in 50 mM) v treh različnih trajanjih (12, 24 in 36h). Kontrolna semena so bila za enak čas namočena v destilirano vodo. Po predobdelavi je bil z vsemi semeni narejen kalitveni test v laboratoriju pri sobni svetlobi in nadzorovani temperaturi. Rezultati so pokazali, da je učinek predobdelave odvisen od koncentracije in vrste raztopin, trajanja predobdelave in sorte. Najboljša kalitev je bila dosežena pri predobdelavi s KCl (10 mM, 36h) za sorto ‘Beldi’, s CaCl2 (10 mM, 36h) za sorto‘Baklouti’ in z NaCl (50 mM, 24h) za sorto ‘Anaheim Chili’. V splošnem je imela predobdelva v primerjavi s kontrolo učinek na odstotek kalitve, povprečen čas kalitve, kalitveni indeks in koeficient hitrosti kalitve. Blagodejni učinek predobdelave semen bi lahko uporabljali za izboljšanje tolerance kalitve na slanost in hitrejšo zgodnjo rast sadik različnih sort paprike.

Ključne besede


paprika; capsicum annuum; predobdelava semena; protokol predobdelave; povprečni čas kalitve; kalitveni indeks; koeficient hitrosti kalitve

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2014.103.2.6

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