Abstract In order to better understand the transformation and distribution of different Se forms in wild peach. Se2−, Se0, Se4+ and Se6+ (from selenomethionine, Se powder, sodium selenite, and sodium selenate, respectively) were added to 4.1-L plastic pots with 15-cm high wild peach seedlings, for a final soil Se concentration of 1.0 mg/kg soil. Growth parameters, Se transaction factors (TFS) and bioconcentration factor, as well as the leaf sugar content and antioxidant ability were determined. We found that all four forms of Se increased shoot length, stem diameter, and dry weight, whereby treatment with Se4+ and Se6+ especially promoted the dry weight. The wild peach seedlings showed different Se enrichment ability, whereby the Se bioconcentration factor (BCF) and total Se uptake per plant were in the same order of Se2– > Se6+> Se4+> Se0 > Control. However, the transaction factors (TFS) in the control and Se6+ treatment groups were significantly higher than in the groups treated with other Se forms. The control and the Se forms Se0, Se4+ and Se2− showed the same trend of Se distribution, with the largest Se concentration in the roots, followed by the leaves and stems. No significant differences were observed in leaf pigment concentration of the seedlings treated with all Se forms except for Se0. Treatment with different Se forms significantly reduced the leaf malondialdehyde (MDA) concentration, obviously increased the reducing power, insignificantly increased the content of reducing sugars, and decreased the content of total sugars. Overall, different Se forms effected the growth and physiological parameters of wild peach seedlings to different extent, whereby Se6+ and Se2– led to the highest Se accumulation, which may be beneficial for the production of Se-enriched fruits.

中文翻译：

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不同硒形态对野生桃硒积累、植株生长及生理参数的影响

摘要 为了更好地了解野生桃中不同硒形态的转化和分布。将 Se2−、Se0、Se4+ 和 Se6+（分别来自硒代蛋氨酸、硒粉、亚硒酸钠和硒酸钠）添加到 4.1 升塑料盆中，其中装有 15 厘米高的野生桃幼苗，最终土壤硒浓度为 1.0 毫克/公斤土壤。测定了生长参数、硒交易因子（TFS）和生物富集因子，以及叶糖含量和抗氧化能力。我们发现所有四种形式的硒都增加了枝条长度、茎直径和干重，因此用 Se4+ 和 Se6+ 处理特别促进了干重。野生桃幼苗表现出不同的硒富集能力，其中硒生物富集因子（BCF）和单株总硒吸收量的顺序为Se2->Se6+>Se4+> Se0 > 控制。然而，对照组和 Se6+ 治疗组的交易因子 (TFS) 显着高于其他硒形式治疗组。对照和Se形态Se0、Se4+和Se2-表现出相同的Se分布趋势，根中Se浓度最大，其次是叶和茎。除Se0外，用所有Se形式处理的幼苗的叶色素浓度没有显着差异。不同硒形态处理显着降低叶丙二醛(MDA)浓度，显着提高还原力，不显着提高还原糖含量，降低总糖含量。总体而言，不同硒形态对野生桃幼苗的生长和生理参数有不同程度的影响，