4个番茄品种耐盐性比较

[目的]通过4个番茄品种在种子萌发期和幼苗期耐盐性比较,确定最耐盐番茄品种。[方法]以4个番茄品种为试材,研究番茄种子萌发和幼苗生长期的耐盐性。[结果]随着Na Cl浓度的增加,4个不同番茄品种种子发芽率和发芽势下降,相对盐害率增加;植株株高和干物质积累量降低,盐害指数和干鲜比增加,根冠比呈上升—下降—上升的趋势;4个番茄品种在Na Cl浓度50 mmol/L以下的盐碱土可以正常生长,齐达利耐盐性最强,可在Na Cl浓度100 mmol/L正常生长,4个番茄品种耐盐性由高到低依次为齐达利、粉宴1号、美贝、3684。[结论]该研究为盐碱地番茄品种栽培和耐盐机理研究提供理论依据。

Comparison on Salt Tolerance of Four Tomato Varieties

[Objective]The most salt-tolerant tomato varieties was identified by comparison of four tomato varieties in seed germination stage and seedling stage.[Method]The salt tolerance of four tomato varieties were studied in the seed germination period and the seedling growth period.[Result]With the increase of NaCl concentration, the germination energy and the germination percentage declined,the relative salt injury rate increased,the plant height and the dry matter accumulation declined,the dry fresh ratio and the index of salt damage increased, root-shoot ratio was the trend of up-down-up;They growed normally under 50 mmol/L NaCl stress.Qidali growed normally under 100 mmol/L NaCl stress.The salt tolerance of four tomato varieties were Qidali,Fenyanyihao,Meibei,3684.[Conclusion]The study can provide theoretical basis for the study of the of tomato varieties cultivation and the mechanism of salt tolerance.