中文摘要：

油葵是我国重要的油料作物之一,具有耐盐性强的优点。种子萌发期是油葵发育的第一个时期,在其整个生活史中占有重要的地位,而对其耐盐性的研究目前还较少。该研究通过对‘DW2177’、‘DW667’、‘高油1号’和‘新葵10号’等国内外4个油葵品种萌发期耐盐性的评价,发现了耐盐性最高的油葵品种‘新葵10号’;利用HPLC技术对其不同盐浓度下的萌发期内源激素含量进行了分析。结果表明：在内源激素调控油葵耐盐性上,GA3在低盐浓度时发挥作用而ABA在高盐浓度时发挥作用;IAA在调节油葵耐盐性方面发挥着核心的作用。

英文摘要：

Oil sunflower is one of the important oil crops in China,which has the advantages of strong salt resistance.As the first period of development of oil sunflower,seed germination was important in its whole life history,while the research on salt tolerance was few.In present study,four domestic and foreign oil sunflower varieties including‘DW2177＇,‘DW667＇,‘Gaoyou No.1＇and‘Xinkui No.10＇were evaluated at germination stage of salt tolerance,and‘Xinkui No.10＇was found the most salt tolerant varieties.High performance liquid chromatography（HPLC）technique under different salt concentration on the germination of endogenous hormone contents of oil sunflower was conducted.The results showed that,in the hormonal regulation of salt tolerance of oil sunflower,GA3 played a role in the low salt concentration and ABA played a role in high salt concentration;IAA played a central role in the regulation of salt tolerance of oil sunflower.The results were important for further study on hormonal regulation of salt tolerance of oil sunflower.