Determination of salt tolerance of tomato varieties in laboratory conditions

Abstract

The aim of the study was to study the effect of salt solutions of different concentrations on seed germination in 7 tomato varieties and 3 hybrids in the Republic of Karakalpakstan. The following options were studied in the studies: dry seeds (control 1); - seeds soaked in water (control 2); - seeds dissolved in solutions: 0.3% NaCl; - 0.5% NaCl; - 0.7% NaCl; - 1.0% NaCl; - 0.3% Na2SO4; - 0.5% Na2SO4; - 0.7% Na2SO4; -1.0% Na2SO4. The experiment revealed that tomato varieties and hybrids are resistant to chloride and sulfate salinity at the lowest concentrations (0.3 %). It was proven that a further increase in the concentration of salt solutions (from 0.5 to 1.0 %) negatively affects the quality of sowing seeds. When determined the germination power and seed germination in NaCl solutions, varieties of tomato Rio Grande, Novichok, UzMASh-1, TMK-22 and Solerosso F1 hybrids were the best among the studied samples.