Evaluation of salinity tolerance in the early and late growing stages of Triticales (X Triticum secale)
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Abstract
lines at the early and final growing stages. Thus, two experimental
trials were performed: a saline treatment with an electric
conductivity (EC) of 10 dS.m-1 and a control one with
EC= 0.02 dS.m-1. The following variables were evaluated at
the first experiment: water uptake, seedling height, root length
and fresh and dry biomass accumulation. Yield components
were evaluated at the second experiment. All data were
expressed in relative values to the control. A characterization
based on its relative tolerance degree for both stages was
done through a cluster analysis. Consequently, there was a
wide variability on stress response over both phenophases.
Just a single line (ITSN-14) was tolerant; however, indexes
were higher than those previously reported in triticales, so
they are recommended to be evaluated by means of other more
accurate physiological and biochemical salinity-tolerant
indicators.
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