THE INFLUENCE OF SALIN STRESS ON THE SOIL CHEMICALCOMPOSITION AND THE PRODUCTION OF PLANTS TO SOME BEAN GENOTYPES FROM NORTH-EASTERN ROMANIA PUBLISHED

Beatrice Alexandra MODIGA, Mihaela COVAȘĂ, Cristina SLABU, Alina Elena MARTA, Carmenica Doina JITĂREANU modigabeatricealexandra@yahoo.com
Among environmental stressors, salinity remains the main factor, which questions thefuture of agriculture. At the same time, the resistance to this factor is determined by the morpho-anatomic and physiological properties of the plants, which ensure their tolerance to the high saltconcentration. Considering that beans are a salt-sensitive species, this study has analyzed theeffect of excess NaCl on soil chemical composition and plant production to 7 bean populationscollected from saline soils in North-East Romania. The experiment was conducted under greenconditions at the USAMV Iaşi Fitotron during 2017-2018, the plants being exposed to salinestress for 30 days with concentrations of 100 mM and 200 mM NaCl. The experience wasbifactorial, organized as randomized blocks with three rehearsals. The overall objective of thestudy is to identify local populations of beans tolerant to this stress factor. In this regard, after 30days of treatment, the results showed a significant effect of salinity on the studied genotypes. Theneutral-alkaline pH change and the high CTSS (total salt content) values from the control group,when applied to the two treatments, reduced the permeability of cell membranes by inhibitingwater absorption in part of the studied local populations. The obtained results show that theBlăgeşti 2 and Blăgeşti 4 genotypes recorded the highest productions to all experimentalvariants, which confirms the resistance of these populations to saline stress. The lowest values were recorded in the local population of Mošna, with the specification that the variant treatedwith 200mM NaCl did not fructify at all. The data was analyzed by calculating the correlationcoefficient with Microsoft Exce
pH, CTSS, productivity, beans
Biology applied in Agriculture
Presentation: poster

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