Evaluation of garden pea cultivars to salt stress tolerance

  • 1 Maritsa Vegetable Crops Research Institute, Plovdiv, Bulgaria


Soil salinity is one of the main limiting factors for the plant growth and productivity. Response of three garden pea cultivars (Mira, Zornitsa and Ran 1) to salt stress in in vitro and in vivo conditions was studied. The in vitro stress was induced by adding of 0 (nontreated control), 50, 100 and 200 mM NaCI in culture medium. After two weeks the germination and seedling emergence rate were not significantly affected by 50 mM NaCl. In culture medium containing 200 mM NaCl only 13.3 – 43.3% of the seeds developed to the plants. The data indicated that increasing NaCl level the shoot and root lengths, and plant fresh weight were significantly reduced. In in vivo condition, such clear differences between the tested NaCl concentrations were not observed. Nevertheless, the applied salt stress more strongly affected the shoot fresh weight and root length than stem length. Among the three tested genotypes cultivar Zornitsa was the most tolerant one, proved in both in vitro and in vivo experiments.



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