摘要： 作为新引发剂的交联型聚丙烯酸钠（SPP），应用于大豆种子引发具有显著防护吸胀损伤的效果。经SPP引发的种子，子叶破裂率下降，畸形苗减少，种子活力提高。SPP引发使种子细胞膜结构完整性得以恢复，表现在种子渗漏物质减少。SPP引发防护种子吸胀损伤与其降低种子吸水速率有密切联系。本文就此进行了讨论。

关键词: SPP(交联型聚丙烯酸钠), 引发, 吸胀损伤, 大豆

Abstract: Priming with a new type of primer,Sodium Poly-Propenate(SPP),could effectively prevent soybean from imbibing damage.The experiment indicated that after the seeds were primed with SPP.the broken cotyledon did not occur,the number of abnormal seedlings was decreased,and the primed seeds were more vigorous.The structure and function of the membrane system of the primed seeds was improved,which resulted in the decrease of the leakage from seed cells.At an early period of the treatment,the rate of water-uptaking by seeds during imbibition in water was 4 times higher than that in SPP priming.This result indicated that there would be close relationship between the prevention of imbibing damage and the decrease of the rate of water-uptaking by SPP.The mechanism of the prevention of imbibing damage with SPP priming was discussed.

Key words: SPP priming, Imbibing damage, Soydean