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NaCl effects in Zea mays L. x Tripsacum dactyloides (L.) L. hybrid calli and plants Julieta Pesqueira* Maria
Dina García Sebastian
Staltari Maria
del Carmen Molina *Corresponding author Financial support: FCAyF-UNLP (grant A129), FCA-UNLZ and CONICET (grant 4650). Keywords: intergeneric hybrid, plant regeneration, organogenesis, salinity tolerance.
High salt concentrations
in soils negatively affect maize growth. Techniques such as remote
hybridization and in vitro selection have been extensively
used to accelerate breeding processes. In order to determine the usefulness
of Tripsacum to improve salt tolerance in maize, the effects
of NaCl, in vitro and in vivo, were evaluated in an
intergeneric hybrid (MT) obtained from crossing Zea mays with
Tripsacum dactyloides. Organogenic calli, induced from immature
MT hybrid embryos, were exposed to different NaCl concentrations and
the survival and regeneration percentages were calculated. Plants
of the MT hybrid, obtained from the organogenic calli, were exposed
to NaCl concentrations considered harmful for maize. The shoot dry
weights of plants exposed to |
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