Physiological researches on the influence of salt stress at some local populations of beans(phaseolus vulgarisl.)

Abstract

Saline stress affects seeds germination, reduces the chlorophyll content in the plant leaves and the photosynthesis activity, changes that have prompted the researchers around the world, also in Romania, to study this abiotic factor with interest.The success of the research could provide the extension of plant cultivation to areas affected by salinisation or as well as the possibility of using sea and ocean water, a vast resource, for irrigation of crops, and as a result, the increase in world biomass production.The present research investigated the influence of saline solutions (100 mM and 200 mM NaCl) on the chlorophyll pigments content in 10 local populations of common beans (Phaseolus vulgaris L.) grown in pots, in greenhouse conditions. The main objective of this study was to identify the salinity tolerant genotypes, knowing that this attribute is also conferred by a high chlorophylls concentration. Also tolerant genotypes could be used in plant breeding, as these local populations are adapted to the environmental conditions of the NE of Romania.