中文摘要：

为了探明黑果枸杞种子在不同水分和钠盐胁迫下的萌发特性,通过模拟硫酸盐盐渍化土壤溶液渗透势和阴离子组成,研究了黑果枸杞种子在PEG-6000不同渗透势溶液和不同钠盐（Na CI、Na2SO4、Na HCO3、复合钠盐）溶液中的萌发情况。结果表明：随着PEG溶液渗透势的逐渐减小,其种子发芽率、发芽势、发芽指数、萌发抗旱指数均逐步降低,溶液渗透势适宜值、临界值与极限值分别为-0.24、-0.97、-1.69 MPa,说明水分胁迫对种子萌发有一定的延缓作用和明显的抑制作用。除低浓度的Na2SO4溶液（0.2%～0.4%）处理能提高种子的发芽率外,以Na CI、Na2SO4、Na HCO3溶液处理黑果枸杞种子,随着溶液浓度的增加,其发芽率和发芽势、发芽指数均有明显的降低趋势,但溶液浓度和降低幅度值各不相同,以复合钠盐溶液处理的黑果枸杞种子其发芽率、发芽势、发芽指数均呈十分弱的“S”型降低,其萌发浓度的适宜值、临界值与极限值分别为0.18%、1.42%和2.66%,不同的盐分胁迫对种子萌发的影响效应不同;用相同浓度不同钠盐处理对黑果枸杞种子萌发造成的盐害率为Na HCO3〉Na Cl〉复合盐〉Na2SO4。

英文摘要：

In order to study the characteristics of seed germination in Lycium ruthenicum under different stresses conditions of water and sodium salt, germination status of L. ruthenicum seed was studied under different conditions of osmotic potential and sodium salt solutions （NaCl, Na2SO4, NaHCO3, composite alkali salt）, through simulating osmotic potential and anion combination of sulfate salinization soil solution. The results showed that germination rate, germination energy, germination index and drought resistance index of germination were reduced with the osmotic potential of PEG solution dropping, and the optimal, critical, and limiting values of solution osmotic potential were -- 0.24, -- 0.97 and -- 1.69 MPa respectively. So seed germination could been delayed and depressed by water stress. Except lower concentration of Na2SO4 solution （0.2%-0.4%）, seed germination rate, germination energy and germination index were significantly reduced with concentration rising of NaCl, Na2SO4 and NaHCO3 solutions. But solution concentrations and reducing ranges the values were different. The changes of seed germination rate, germination energy and germination index appeared ＇S＇ type in composite sodium salt solution treatments, and the optimized, critical and limiting values of solutions were 0.18%, 1.42% and 2.66%, respectively. Different salt composition had different effects on seed germination. The sodium salts were NaHCO3, NaCl, Composite salt, Na2SO4, respectively, based on salt injury rates of seed germination from high to low, under the same concentrations of sodium salts solutions.