Seed priming is one of advanced seed treatment technologies in international.In this study,water priming on seed germination and vigor of four different size grades of spinach seeds were conducted with vigor indexes characterized by seedling growth test, conductivity test and simulated field test.The results showed that it was detrimental to seedlings' s health after pericarp removal and vigor of spinach ( Spinacia oleracea) seeds of different size grades were obviously improved by water priming.And different size grades of spinach (Spinacia oleracea) seeds had the different optimum time of soaking and keeping humidity.The result was that seed diameter(d for short) ＜1.7 mm was 10 min,24 h; 1.7 mm≤ d＜2.5 mm and 2.5 mm≤ d＜3.0 mm were 20 min,24 h; d≥3.0 mm was 30 min,24 h.%用水作为引发剂对4个大小等级的菠菜种子进行引发处理,通过幼苗生长测定、电导率测定以及模拟田间试验等比较分析种子活力指标,探索引发处理提高菠菜种子活力的效果.结果表明:去除果皮不利于菠菜种子正常成苗;适宜的水引发处理能明显提高菠菜种子的活力,不同大小等级菠菜种子水引发的适宜浸种及保湿时间有所不同,其中种子直径d＜1.7 mm为10 min、24 h;1.7 mm≤d＜2.5 mm和2.5 mm≤d＜3.0 mm均为20 min、24 h;d≥3.0 mm为30 min、24 h.
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