Study on Salinity Tolerance of Tomatoes during Seed Germination under Different Salt Stress Conditions
[Objective] The aim of this study was to provide the theoretical basis for screening and utilizing salt-tolerant tomato varieties as well as for cultivating salt-resistance. [Method] Salinity tolerance of tomato during seed germination under simple salt sodium chloride and double salt calcium nitrate or sodium chloride stress were studied by Petri dish culturing. [Result] As the two kinds salt concentration increased, the germination regularity, the germination rate, the germination index and the growing vigor index of tomato seedlings decreased, but the germination losing rate increased. When salt concentration was from 0.2% to 0.4%, there was little difference among all indexes under two kinds of salt stress. However, when salt concentration was from 0.6% to 1.0%, the difference among all indexes under two kinds of salt stress was significant. [Conclusion] Salinity tolerance of tomato seeds under double salt calcium nitrate or sodium chloride stress was higher than that under simple salt sodium chloride stress.
TomatoSeed germinationSimple salt stressDouble salt stress
马洪英、郭锐、李洪安、张远芳
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天津市农业高新技术示范园区管理中心,天津,300384
Tomato Seed germination Simple salt stress Double salt stress
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