Abstract

QUINTANA-BLANCO, Wilmer Alejandro; PINZON-SANDOVAL, Elberth Hernando  and  TORRES, David Fernando. EVALUATION OF BEAN (Phaseolus vulgaris L.) CV 'ICA CERINZA' GROWTH, UNDER SALT STRESS. rev.udcaactual.divulg.cient. [online]. 2016, vol.19, n.1, pp.87-95. ISSN 0123-4226.

The common bean (Phaseolus vulgaris L.) is one of the most important products for human feeding. In addition, bean cultivations is widely distributed in tropical and subtropical regions. At present most areas suitable for agricultural purposes have salinization problems either by natural soil conditions or because of human action. The common bean is sensitive to salinity, as this condition could reduce yield up to 50%. The objective of this research was to evaluate the behavior of the cultivar Ica Cerinza, subjected to different concentrations of NaCl under greenhouse conditions. The treatment to generate salt stress were 0, 20, 40 and 60mM of NaCl. The experimental design used was completely randomized. Physiological parameters such as, stomatal resistance, chlorophyll content, leaf area, fresh and dry weight of organs, leaf thickness and root length were evaluated. Result showed that as NaCl dose was increased, chlorophyll content decreased and stomatal resistance increased, which was reflected in scares growth and accumulation of dry and fresh matter from the plant. However the cultivar showed a tolerance to a moderate salinity condition, since it generated morphological type responses, which avoided a drastic reduction of increase during the vegetative growth stage.

Keywords : Salinity; physiological behavior; leguminous; growth.

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