Polyethylene glycol (PEG-6000)with the water potential of 0,-0.2,-0.6 and -1.2 MPa were applied to prime triploid watermelon seeds for 3,6,9 and 12 h; and the germination rate as well as the seedling vigor of treatments and control were evaluated in this experiment. Different water potential of PEG-6000 solutions had no significant effect on triploid watermelon seed germination and seedling vigor. Priming period of 3 h gave the best result eompared with other treatments,germination rate and vigor index were obviously better than other treatment. This priming time agrees with the commonly used seed soaking time of triploid watermelon.%为了探索一条能大批量处理无籽西瓜种子,有效提高种子活力的途径,应用水势0、-0.2、-0.6和-1.2MPa的聚乙二醇(PEG-6000)溶液对三倍体无籽西瓜种子进行3、6、9、12h引发处理,并与常规萌发条件下的种子萌芽情况进行比较分析.结果表明:(1)各种水势的PEG-6000溶液引发对无籽西瓜种子发芽各项指标均没有显著影响.(2)3h引发处理相对于其他引发时间处理,能最大程度地提高无籽西瓜种子发芽能力,在发芽率、发芽势、发芽指数和活力指数的影响上均存在明显差异,这与常规生产上无籽西瓜浸种时间结果一致.
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