防腐剂胁迫下比较两种外激素处理对玉米幼苗生长的影响
关键词：油菜素内酯；硫胺素；防腐剂；玉米幼苗；缓解8551
Effect of Two Kinds of Exogenous Hormones on Seedling Growth of
Corn under Preservative Stress
Abstract: With different proportion of a mixture of exogenous hormones(brassinosteroid, thiamine) to deal with corn seedlings under the stress of preservative, studies two kinds of a mixture of exogenous hormones helps relieve the stress of preservative of corn seedling effect is better than a single hormone. The method of hydroponics culture was performed in this study. The results show that: Compared with the control group, 10.0 g/L composite preservative (the mass ratio of sodium benzoate and potassium sorbate is 2:3) significantly inhibited the growth of maize seedlings, mainly including dwarfed plants, decreased chlorophyll content, increasesd proline, malondialdehyde (MDA) and soluble sugar content, compared with preservative-treated group, a mixture of brassinosteroid and thiamine (1:3) have better mitigation effect．
Key Words: Brassinosteroid ; Thiamine; Preservatives; Corn seedlings; Alleviate
目 录
摘 要 1
引 言 1
1 材料和方法 2
1.1 材料和设备 2
1.2 材料处理 2
1.3 实验方法 3
1.4 数据分析 3
2 结果与分析 3
2.1防腐剂胁迫下两种外援激素处理对玉米幼苗形态学指标的影响 3
2.2防腐剂胁迫下两种外援激素处理对玉米幼苗叶片叶绿素含量的影响 5
2.3防腐剂胁迫下两种外援激素处理对玉米幼苗丙二醛（MDA）含量的影响 5
2.4 防腐剂胁迫下两种外援激素处理对玉米幼苗脯氨酸含量的影响 6
2.5 防腐剂胁迫下两种外援激素处理对玉米幼苗可溶性糖含量的影响 6
3 讨论 7
4 结论 9
参考文献 10
致 谢 12
防腐剂胁迫下比较两种外援激素处理对玉米幼苗生长的影响 引言
目前，为了延长食品的有效期、提高食品的质量，在食品生产的过程中会加入一定的食品添加剂，随着食品工业的迅速发展。食品防腐剂的使用量在逐年攀升。大量的食品防腐剂。特别是苯甲酸钠和山梨酸钾。苯甲酸是当前在食品中应用最为广泛的一种防腐剂，很多企业在生产产品的过程中[1]，为了减少成本，延长食品的保质期。在食品当中加入了过量的苯甲酸，或者在一些设备简陋的工厂当中并没有拌匀，导致食品当中的防腐剂射入过量，势必直接或间接进入土壤和水源，造成污染，影响农作物的生长。
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