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洋葱超干种子室温下抗老化能力增强，耐储性提高。能明显延缓衰老。超干种子直接吸胀会引 起胚根断裂和种子活力下降。但吸胀前回水处理可以减轻吸胀过程中造成的损伤；超干处理大大增加了 苏氨酸（Ｔｈｒ）的渗漏，回水处理可恢复到原来水平。经回水处理的老化超干种子较未超干的对照老化种 子氨基酸和无机离子泄漏量减少，洋葱种子漏失的氨基酸以组氨酸（Ｈｉｓ）和苏氨酸（Ｔｈｒ）为多，外渗离子 以钾最多，超干还增加Ｃａ２＋和Ｍｇ２＋的渗漏，但回水后恢复到超干前的水平。
Onion ultra-dry seeds at room temperature enhanced anti-aging ability, increased resistance to storage. Can significantly delay aging. Direct imbibition of ultra-dry seeds causes rupture of radicles and decreased seed vigor. However, the pre-accretion backwater treatment can reduce the damage caused by the imbibition process. Ultra-dry treatment greatly increases the leakage of threonine (Thr), and the backwater treatment can be restored to its original level. Leakage of amino acids and inorganic ions by aged seedlings treated by backwashing was lower than that of the control seed without aging. Leakage of amino acids in onion seeds was more with histidine (His) and threonine (Thr) Most potassium, ultra-dry also increases the leakage of Ca2 + and Mg2 +, but returned to the ultra-dry before the return of the level.